MAYBE Time: 0.141446 TRS: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} DP: DP: { active# dbl X -> active# X, active# dbl X -> dbl# active X, active# dbl s X -> dbl# X, active# dbl s X -> s# dbl X, active# dbl s X -> s# s dbl X, active# dbls X -> active# X, active# dbls X -> dbls# active X, active# dbls cons(X, Y) -> dbl# X, active# dbls cons(X, Y) -> dbls# Y, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y), active# sel(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X2, active# sel(X1, X2) -> sel#(X1, active X2), active# sel(X1, X2) -> sel#(active X1, X2), active# sel(s X, cons(Y, Z)) -> sel#(X, Z), active# indx(X1, X2) -> active# X1, active# indx(X1, X2) -> indx#(active X1, X2), active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z)), active# indx(cons(X, Y), Z) -> sel#(X, Z), active# indx(cons(X, Y), Z) -> indx#(Y, Z), active# from X -> s# X, active# from X -> cons#(X, from s X), active# from X -> from# s X, active# dbl1 X -> active# X, active# dbl1 X -> dbl1# active X, active# dbl1 s X -> dbl1# X, active# dbl1 s X -> s1# dbl1 X, active# dbl1 s X -> s1# s1 dbl1 X, active# s1 X -> active# X, active# s1 X -> s1# active X, active# sel1(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X2, active# sel1(X1, X2) -> sel1#(X1, active X2), active# sel1(X1, X2) -> sel1#(active X1, X2), active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z), active# quote X -> active# X, active# quote X -> quote# active X, active# quote dbl X -> dbl1# X, active# quote s X -> s1# quote X, active# quote s X -> quote# X, active# quote sel(X, Y) -> sel1#(X, Y), dbl# mark X -> dbl# X, dbl# ok X -> dbl# X, s# ok X -> s# X, dbls# mark X -> dbls# X, dbls# ok X -> dbls# X, cons#(ok X1, ok X2) -> cons#(X1, X2), sel#(X1, mark X2) -> sel#(X1, X2), sel#(mark X1, X2) -> sel#(X1, X2), sel#(ok X1, ok X2) -> sel#(X1, X2), indx#(mark X1, X2) -> indx#(X1, X2), indx#(ok X1, ok X2) -> indx#(X1, X2), from# ok X -> from# X, dbl1# mark X -> dbl1# X, dbl1# ok X -> dbl1# X, s1# mark X -> s1# X, s1# ok X -> s1# X, sel1#(X1, mark X2) -> sel1#(X1, X2), sel1#(mark X1, X2) -> sel1#(X1, X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2), quote# mark X -> quote# X, quote# ok X -> quote# X, proper# dbl X -> dbl# proper X, proper# dbl X -> proper# X, proper# s X -> s# proper X, proper# s X -> proper# X, proper# dbls X -> dbls# proper X, proper# dbls X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2), proper# cons(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X2, proper# sel(X1, X2) -> sel#(proper X1, proper X2), proper# sel(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X2, proper# indx(X1, X2) -> indx#(proper X1, proper X2), proper# indx(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X2, proper# from X -> from# proper X, proper# from X -> proper# X, proper# dbl1 X -> dbl1# proper X, proper# dbl1 X -> proper# X, proper# s1 X -> s1# proper X, proper# s1 X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2), proper# sel1(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X2, proper# quote X -> quote# proper X, proper# quote X -> proper# X, top# mark X -> proper# X, top# mark X -> top# proper X, top# ok X -> active# X, top# ok X -> top# active X} TRS: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} UR: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, a(x, y) -> x, a(x, y) -> y} EDG: { (active# dbl s X -> s# dbl X, s# ok X -> s# X) (active# from X -> from# s X, from# ok X -> from# X) (active# dbl1 s X -> s1# dbl1 X, s1# ok X -> s1# X) (active# dbl1 s X -> s1# dbl1 X, s1# mark X -> s1# X) (active# quote X -> quote# active X, quote# ok X -> quote# X) (active# quote X -> quote# active X, quote# mark X -> quote# X) (proper# dbl X -> dbl# proper X, dbl# ok X -> dbl# X) (proper# dbl X -> dbl# proper X, dbl# mark X -> dbl# X) (proper# dbls X -> dbls# proper X, dbls# ok X -> dbls# X) (proper# dbls X -> dbls# proper X, dbls# mark X -> dbls# X) (proper# dbl1 X -> dbl1# proper X, dbl1# ok X -> dbl1# X) (proper# dbl1 X -> dbl1# proper X, dbl1# mark X -> dbl1# X) (proper# quote X -> quote# proper X, quote# ok X -> quote# X) (proper# quote X -> quote# proper X, quote# mark X -> quote# X) (top# ok X -> top# active X, top# ok X -> top# active X) (top# ok X -> top# active X, top# ok X -> active# X) (top# ok X -> top# active X, top# mark X -> top# proper X) (top# ok X -> top# active X, top# mark X -> proper# X) (sel#(X1, mark X2) -> sel#(X1, X2), sel#(ok X1, ok X2) -> sel#(X1, X2)) (sel#(X1, mark X2) -> sel#(X1, X2), sel#(mark X1, X2) -> sel#(X1, X2)) (sel#(X1, mark X2) -> sel#(X1, X2), sel#(X1, mark X2) -> sel#(X1, X2)) (sel#(ok X1, ok X2) -> sel#(X1, X2), sel#(ok X1, ok X2) -> sel#(X1, X2)) (sel#(ok X1, ok X2) -> sel#(X1, X2), sel#(mark X1, X2) -> sel#(X1, X2)) (sel#(ok X1, ok X2) -> sel#(X1, X2), sel#(X1, mark X2) -> sel#(X1, X2)) (indx#(ok X1, ok X2) -> indx#(X1, X2), indx#(ok X1, ok X2) -> indx#(X1, X2)) (indx#(ok X1, ok X2) -> indx#(X1, X2), indx#(mark X1, X2) -> indx#(X1, X2)) (sel1#(mark X1, X2) -> sel1#(X1, X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2)) (sel1#(mark X1, X2) -> sel1#(X1, X2), sel1#(mark X1, X2) -> sel1#(X1, X2)) (sel1#(mark X1, X2) -> sel1#(X1, X2), sel1#(X1, mark X2) -> sel1#(X1, X2)) (active# sel(X1, X2) -> active# X2, active# quote sel(X, Y) -> sel1#(X, Y)) (active# sel(X1, X2) -> active# X2, active# quote s X -> quote# X) (active# sel(X1, X2) -> active# X2, active# quote s X -> s1# quote X) (active# sel(X1, X2) -> active# X2, active# quote dbl X -> dbl1# X) (active# sel(X1, X2) -> active# X2, active# quote X -> quote# active X) (active# sel(X1, X2) -> active# X2, active# quote X -> active# X) (active# sel(X1, X2) -> active# X2, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# sel(X1, X2) -> active# X2, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# sel(X1, X2) -> active# X2, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# sel(X1, X2) -> active# X2, active# sel1(X1, X2) -> active# X2) (active# sel(X1, X2) -> active# X2, active# sel1(X1, X2) -> active# X1) (active# sel(X1, X2) -> active# X2, active# s1 X -> s1# active X) (active# sel(X1, X2) -> active# X2, active# s1 X -> active# X) (active# sel(X1, X2) -> active# X2, active# dbl1 s X -> s1# s1 dbl1 X) (active# sel(X1, X2) -> active# X2, active# dbl1 s X -> s1# dbl1 X) (active# sel(X1, X2) -> active# X2, active# dbl1 s X -> dbl1# X) (active# sel(X1, X2) -> active# X2, active# dbl1 X -> dbl1# active X) (active# sel(X1, X2) -> active# X2, active# dbl1 X -> active# X) (active# sel(X1, X2) -> active# X2, active# from X -> from# s X) (active# sel(X1, X2) -> active# X2, active# from X -> cons#(X, from s X)) (active# sel(X1, X2) -> active# X2, active# from X -> s# X) (active# sel(X1, X2) -> active# X2, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# sel(X1, X2) -> active# X2, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# sel(X1, X2) -> active# X2, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# sel(X1, X2) -> active# X2, active# indx(X1, X2) -> indx#(active X1, X2)) (active# sel(X1, X2) -> active# X2, active# indx(X1, X2) -> active# X1) (active# sel(X1, X2) -> active# X2, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# sel(X1, X2) -> active# X2, active# sel(X1, X2) -> sel#(active X1, X2)) (active# sel(X1, X2) -> active# X2, active# sel(X1, X2) -> sel#(X1, active X2)) (active# sel(X1, X2) -> active# X2, active# sel(X1, X2) -> active# X2) (active# sel(X1, X2) -> active# X2, active# sel(X1, X2) -> active# X1) (active# sel(X1, X2) -> active# X2, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# sel(X1, X2) -> active# X2, active# dbls cons(X, Y) -> dbls# Y) (active# sel(X1, X2) -> active# X2, active# dbls cons(X, Y) -> dbl# X) (active# sel(X1, X2) -> active# X2, active# dbls X -> dbls# active X) (active# sel(X1, X2) -> active# X2, active# dbls X -> active# X) (active# sel(X1, X2) -> active# X2, active# dbl s X -> s# s dbl X) (active# sel(X1, X2) -> active# X2, active# dbl s X -> s# dbl X) (active# sel(X1, X2) -> active# X2, active# dbl s X -> dbl# X) (active# sel(X1, X2) -> active# X2, active# dbl X -> dbl# active X) (active# sel(X1, X2) -> active# X2, active# dbl X -> active# X) (proper# cons(X1, X2) -> proper# X2, proper# quote X -> proper# X) (proper# cons(X1, X2) -> proper# X2, proper# quote X -> quote# proper X) (proper# cons(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> proper# X2) (proper# cons(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> proper# X1) (proper# cons(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# cons(X1, X2) -> proper# X2, proper# s1 X -> proper# X) (proper# cons(X1, X2) -> proper# X2, proper# s1 X -> s1# proper X) (proper# cons(X1, X2) -> proper# X2, proper# dbl1 X -> proper# X) (proper# cons(X1, X2) -> proper# X2, proper# dbl1 X -> dbl1# proper X) (proper# cons(X1, X2) -> proper# X2, proper# from X -> proper# X) (proper# cons(X1, X2) -> proper# X2, proper# from X -> from# proper X) (proper# cons(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X2) (proper# cons(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X1) (proper# cons(X1, X2) -> proper# X2, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# cons(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X2) (proper# cons(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X1) (proper# cons(X1, X2) -> proper# X2, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# cons(X1, X2) -> proper# X2, proper# cons(X1, X2) -> proper# X2) (proper# cons(X1, X2) -> proper# X2, proper# cons(X1, X2) -> proper# X1) (proper# cons(X1, X2) -> proper# X2, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# cons(X1, X2) -> proper# X2, proper# dbls X -> proper# X) (proper# cons(X1, X2) -> proper# X2, proper# dbls X -> dbls# proper X) (proper# cons(X1, X2) -> proper# X2, proper# s X -> proper# X) (proper# cons(X1, X2) -> proper# X2, proper# s X -> s# proper X) (proper# cons(X1, X2) -> proper# X2, proper# dbl X -> proper# X) (proper# cons(X1, X2) -> proper# X2, proper# dbl X -> dbl# proper X) (proper# indx(X1, X2) -> proper# X2, proper# quote X -> proper# X) (proper# indx(X1, X2) -> proper# X2, proper# quote X -> quote# proper X) (proper# indx(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> proper# X2) (proper# indx(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> proper# X1) (proper# indx(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# indx(X1, X2) -> proper# X2, proper# s1 X -> proper# X) (proper# indx(X1, X2) -> proper# X2, proper# s1 X -> s1# proper X) (proper# indx(X1, X2) -> proper# X2, proper# dbl1 X -> proper# X) (proper# indx(X1, X2) -> proper# X2, proper# dbl1 X -> dbl1# proper X) (proper# indx(X1, X2) -> proper# X2, proper# from X -> proper# X) (proper# indx(X1, X2) -> proper# X2, proper# from X -> from# proper X) (proper# indx(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X2) (proper# indx(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X1) (proper# indx(X1, X2) -> proper# X2, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# indx(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X2) (proper# indx(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X1) (proper# indx(X1, X2) -> proper# X2, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# indx(X1, X2) -> proper# X2, proper# cons(X1, X2) -> proper# X2) (proper# indx(X1, X2) -> proper# X2, proper# cons(X1, X2) -> proper# X1) (proper# indx(X1, X2) -> proper# X2, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# indx(X1, X2) -> proper# X2, proper# dbls X -> proper# X) (proper# indx(X1, X2) -> proper# X2, proper# dbls X -> dbls# proper X) (proper# indx(X1, X2) -> proper# X2, proper# s X -> proper# X) (proper# indx(X1, X2) -> proper# X2, proper# s X -> s# proper X) (proper# indx(X1, X2) -> proper# X2, proper# dbl X -> proper# X) (proper# indx(X1, X2) -> proper# X2, proper# dbl X -> dbl# proper X) (active# dbls cons(X, Y) -> dbls# Y, dbls# ok X -> dbls# X) (active# dbls cons(X, Y) -> dbls# Y, dbls# mark X -> dbls# X) (active# indx(X1, X2) -> active# X1, active# quote sel(X, Y) -> sel1#(X, Y)) (active# indx(X1, X2) -> active# X1, active# quote s X -> quote# X) (active# indx(X1, X2) -> active# X1, active# quote s X -> s1# quote X) (active# indx(X1, X2) -> active# X1, active# quote dbl X -> dbl1# X) (active# indx(X1, X2) -> active# X1, active# quote X -> quote# active X) (active# indx(X1, X2) -> active# X1, active# quote X -> active# X) (active# indx(X1, X2) -> active# X1, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# indx(X1, X2) -> active# X1, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# indx(X1, X2) -> active# X1, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# indx(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X2) (active# indx(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X1) (active# indx(X1, X2) -> active# X1, active# s1 X -> s1# active X) (active# indx(X1, X2) -> active# X1, active# s1 X -> active# X) (active# indx(X1, X2) -> active# X1, active# dbl1 s X -> s1# s1 dbl1 X) (active# indx(X1, X2) -> active# X1, active# dbl1 s X -> s1# dbl1 X) (active# indx(X1, X2) -> active# X1, active# dbl1 s X -> dbl1# X) (active# indx(X1, X2) -> active# X1, active# dbl1 X -> dbl1# active X) (active# indx(X1, X2) -> active# X1, active# dbl1 X -> active# X) (active# indx(X1, X2) -> active# X1, active# from X -> from# s X) (active# indx(X1, X2) -> active# X1, active# from X -> cons#(X, from s X)) (active# indx(X1, X2) -> active# X1, active# from X -> s# X) (active# indx(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# indx(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# indx(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# indx(X1, X2) -> active# X1, active# indx(X1, X2) -> indx#(active X1, X2)) (active# indx(X1, X2) -> active# X1, active# indx(X1, X2) -> active# X1) (active# indx(X1, X2) -> active# X1, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# indx(X1, X2) -> active# X1, active# sel(X1, X2) -> sel#(active X1, X2)) (active# indx(X1, X2) -> active# X1, active# sel(X1, X2) -> sel#(X1, active X2)) (active# indx(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X2) (active# indx(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X1) (active# indx(X1, X2) -> active# X1, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# indx(X1, X2) -> active# X1, active# dbls cons(X, Y) -> dbls# Y) (active# indx(X1, X2) -> active# X1, active# dbls cons(X, Y) -> dbl# X) (active# indx(X1, X2) -> active# X1, active# dbls X -> dbls# active X) (active# indx(X1, X2) -> active# X1, active# dbls X -> active# X) (active# indx(X1, X2) -> active# X1, active# dbl s X -> s# s dbl X) (active# indx(X1, X2) -> active# X1, active# dbl s X -> s# dbl X) (active# indx(X1, X2) -> active# X1, active# dbl s X -> dbl# X) (active# indx(X1, X2) -> active# X1, active# dbl X -> dbl# active X) (active# indx(X1, X2) -> active# X1, active# dbl X -> active# X) (proper# cons(X1, X2) -> proper# X1, proper# quote X -> proper# X) (proper# cons(X1, X2) -> proper# X1, proper# quote X -> quote# proper X) (proper# cons(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X2) (proper# cons(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X1) (proper# cons(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# cons(X1, X2) -> proper# X1, proper# s1 X -> proper# X) (proper# cons(X1, X2) -> proper# X1, proper# s1 X -> s1# proper X) (proper# cons(X1, X2) -> proper# X1, proper# dbl1 X -> proper# X) (proper# cons(X1, X2) -> proper# X1, proper# dbl1 X -> dbl1# proper X) (proper# cons(X1, X2) -> proper# X1, proper# from X -> proper# X) (proper# cons(X1, X2) -> proper# X1, proper# from X -> from# proper X) (proper# cons(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X2) (proper# cons(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X1) (proper# cons(X1, X2) -> proper# X1, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# cons(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X2) (proper# cons(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X1) (proper# cons(X1, X2) -> proper# X1, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# cons(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X2) (proper# cons(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X1) (proper# cons(X1, X2) -> proper# X1, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# cons(X1, X2) -> proper# X1, proper# dbls X -> proper# X) (proper# cons(X1, X2) -> proper# X1, proper# dbls X -> dbls# proper X) (proper# cons(X1, X2) -> proper# X1, proper# s X -> proper# X) (proper# cons(X1, X2) -> proper# X1, proper# s X -> s# proper X) (proper# cons(X1, X2) -> proper# X1, proper# dbl X -> proper# X) (proper# cons(X1, X2) -> proper# X1, proper# dbl X -> dbl# proper X) (proper# indx(X1, X2) -> proper# X1, proper# quote X -> proper# X) (proper# indx(X1, X2) -> proper# X1, proper# quote X -> quote# proper X) (proper# indx(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X2) (proper# indx(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X1) (proper# indx(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# indx(X1, X2) -> proper# X1, proper# s1 X -> proper# X) (proper# indx(X1, X2) -> proper# X1, proper# s1 X -> s1# proper X) (proper# indx(X1, X2) -> proper# X1, proper# dbl1 X -> proper# X) (proper# indx(X1, X2) -> proper# X1, proper# dbl1 X -> dbl1# proper X) (proper# indx(X1, X2) -> proper# X1, proper# from X -> proper# X) (proper# indx(X1, X2) -> proper# X1, proper# from X -> from# proper X) (proper# indx(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X2) (proper# indx(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X1) (proper# indx(X1, X2) -> proper# X1, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# indx(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X2) (proper# indx(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X1) (proper# indx(X1, X2) -> proper# X1, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# indx(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X2) (proper# indx(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X1) (proper# indx(X1, X2) -> proper# X1, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# indx(X1, X2) -> proper# X1, proper# dbls X -> proper# X) (proper# indx(X1, X2) -> proper# X1, proper# dbls X -> dbls# proper X) (proper# indx(X1, X2) -> proper# X1, proper# s X -> proper# X) (proper# indx(X1, X2) -> proper# X1, proper# s X -> s# proper X) (proper# indx(X1, X2) -> proper# X1, proper# dbl X -> proper# X) (proper# indx(X1, X2) -> proper# X1, proper# dbl X -> dbl# proper X) (active# dbls cons(X, Y) -> cons#(dbl X, dbls Y), cons#(ok X1, ok X2) -> cons#(X1, X2)) (active# sel1(X1, X2) -> sel1#(X1, active X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2)) (active# sel1(X1, X2) -> sel1#(X1, active X2), sel1#(mark X1, X2) -> sel1#(X1, X2)) (active# sel1(X1, X2) -> sel1#(X1, active X2), sel1#(X1, mark X2) -> sel1#(X1, X2)) (proper# sel(X1, X2) -> sel#(proper X1, proper X2), sel#(ok X1, ok X2) -> sel#(X1, X2)) (proper# sel(X1, X2) -> sel#(proper X1, proper X2), sel#(mark X1, X2) -> sel#(X1, X2)) (proper# sel(X1, X2) -> sel#(proper X1, proper X2), sel#(X1, mark X2) -> sel#(X1, X2)) (proper# sel1(X1, X2) -> sel1#(proper X1, proper X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2)) (proper# sel1(X1, X2) -> sel1#(proper X1, proper X2), sel1#(mark X1, X2) -> sel1#(X1, X2)) (proper# sel1(X1, X2) -> sel1#(proper X1, proper X2), sel1#(X1, mark X2) -> sel1#(X1, X2)) (active# dbl X -> active# X, active# quote sel(X, Y) -> sel1#(X, Y)) (active# dbl X -> active# X, active# quote s X -> quote# X) (active# dbl X -> active# X, active# quote s X -> s1# quote X) (active# dbl X -> active# X, active# quote dbl X -> dbl1# X) (active# dbl X -> active# X, active# quote X -> quote# active X) (active# dbl X -> active# X, active# quote X -> active# X) (active# dbl X -> active# X, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# dbl X -> active# X, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# dbl X -> active# X, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# dbl X -> active# X, active# sel1(X1, X2) -> active# X2) (active# dbl X -> active# X, active# sel1(X1, X2) -> active# X1) (active# dbl X -> active# X, active# s1 X -> s1# active X) (active# dbl X -> active# X, active# s1 X -> active# X) (active# dbl X -> active# X, active# dbl1 s X -> s1# s1 dbl1 X) (active# dbl X -> active# X, active# dbl1 s X -> s1# dbl1 X) (active# dbl X -> active# X, active# dbl1 s X -> dbl1# X) (active# dbl X -> active# X, active# dbl1 X -> dbl1# active X) (active# dbl X -> active# X, active# dbl1 X -> active# X) (active# dbl X -> active# X, active# from X -> from# s X) (active# dbl X -> active# X, active# from X -> cons#(X, from s X)) (active# dbl X -> active# X, active# from X -> s# X) (active# dbl X -> active# X, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# dbl X -> active# X, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# dbl X -> active# X, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# dbl X -> active# X, active# indx(X1, X2) -> indx#(active X1, X2)) (active# dbl X -> active# X, active# indx(X1, X2) -> active# X1) (active# dbl X -> active# X, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# dbl X -> active# X, active# sel(X1, X2) -> sel#(active X1, X2)) (active# dbl X -> active# X, active# sel(X1, X2) -> sel#(X1, active X2)) (active# dbl X -> active# X, active# sel(X1, X2) -> active# X2) (active# dbl X -> active# X, active# sel(X1, X2) -> active# X1) (active# dbl X -> active# X, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# dbl X -> active# X, active# dbls cons(X, Y) -> dbls# Y) (active# dbl X -> active# X, active# dbls cons(X, Y) -> dbl# X) (active# dbl X -> active# X, active# dbls X -> dbls# active X) (active# dbl X -> active# X, active# dbls X -> active# X) (active# dbl X -> active# X, active# dbl s X -> s# s dbl X) (active# dbl X -> active# X, active# dbl s X -> s# dbl X) (active# dbl X -> active# X, active# dbl s X -> dbl# X) (active# dbl X -> active# X, active# dbl X -> dbl# active X) (active# dbl X -> active# X, active# dbl X -> active# X) (active# dbls X -> active# X, active# quote sel(X, Y) -> sel1#(X, Y)) (active# dbls X -> active# X, active# quote s X -> quote# X) (active# dbls X -> active# X, active# quote s X -> s1# quote X) (active# dbls X -> active# X, active# quote dbl X -> dbl1# X) (active# dbls X -> active# X, active# quote X -> quote# active X) (active# dbls X -> active# X, active# quote X -> active# X) (active# dbls X -> active# X, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# dbls X -> active# X, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# dbls X -> active# X, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# dbls X -> active# X, active# sel1(X1, X2) -> active# X2) (active# dbls X -> active# X, active# sel1(X1, X2) -> active# X1) (active# dbls X -> active# X, active# s1 X -> s1# active X) (active# dbls X -> active# X, active# s1 X -> active# X) (active# dbls X -> active# X, active# dbl1 s X -> s1# s1 dbl1 X) (active# dbls X -> active# X, active# dbl1 s X -> s1# dbl1 X) (active# dbls X -> active# X, active# dbl1 s X -> dbl1# X) (active# dbls X -> active# X, active# dbl1 X -> dbl1# active X) (active# dbls X -> active# X, active# dbl1 X -> active# X) (active# dbls X -> active# X, active# from X -> from# s X) (active# dbls X -> active# X, active# from X -> cons#(X, from s X)) (active# dbls X -> active# X, active# from X -> s# X) (active# dbls X -> active# X, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# dbls X -> active# X, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# dbls X -> active# X, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# dbls X -> active# X, active# indx(X1, X2) -> indx#(active X1, X2)) (active# dbls X -> active# X, active# indx(X1, X2) -> active# X1) (active# dbls X -> active# X, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# dbls X -> active# X, active# sel(X1, X2) -> sel#(active X1, X2)) (active# dbls X -> active# X, active# sel(X1, X2) -> sel#(X1, active X2)) (active# dbls X -> active# X, active# sel(X1, X2) -> active# X2) (active# dbls X -> active# X, active# sel(X1, X2) -> active# X1) (active# dbls X -> active# X, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# dbls X -> active# X, active# dbls cons(X, Y) -> dbls# Y) (active# dbls X -> active# X, active# dbls cons(X, Y) -> dbl# X) (active# dbls X -> active# X, active# dbls X -> dbls# active X) (active# dbls X -> active# X, active# dbls X -> active# X) (active# dbls X -> active# X, active# dbl s X -> s# s dbl X) (active# dbls X -> active# X, active# dbl s X -> s# dbl X) (active# dbls X -> active# X, active# dbl s X -> dbl# X) (active# dbls X -> active# X, active# dbl X -> dbl# active X) (active# dbls X -> active# X, active# dbl X -> active# X) (active# from X -> s# X, s# ok X -> s# X) (active# dbl1 s X -> dbl1# X, dbl1# ok X -> dbl1# X) (active# dbl1 s X -> dbl1# X, dbl1# mark X -> dbl1# X) (active# quote X -> active# X, active# quote sel(X, Y) -> sel1#(X, Y)) (active# quote X -> active# X, active# quote s X -> quote# X) (active# quote X -> active# X, active# quote s X -> s1# quote X) (active# quote X -> active# X, active# quote dbl X -> dbl1# X) (active# quote X -> active# X, active# quote X -> quote# active X) (active# quote X -> active# X, active# quote X -> active# X) (active# quote X -> active# X, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# quote X -> active# X, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# quote X -> active# X, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# quote X -> active# X, active# sel1(X1, X2) -> active# X2) (active# quote X -> active# X, active# sel1(X1, X2) -> active# X1) (active# quote X -> active# X, active# s1 X -> s1# active X) (active# quote X -> active# X, active# s1 X -> active# X) (active# quote X -> active# X, active# dbl1 s X -> s1# s1 dbl1 X) (active# quote X -> active# X, active# dbl1 s X -> s1# dbl1 X) (active# quote X -> active# X, active# dbl1 s X -> dbl1# X) (active# quote X -> active# X, active# dbl1 X -> dbl1# active X) (active# quote X -> active# X, active# dbl1 X -> active# X) (active# quote X -> active# X, active# from X -> from# s X) (active# quote X -> active# X, active# from X -> cons#(X, from s X)) (active# quote X -> active# X, active# from X -> s# X) (active# quote X -> active# X, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# quote X -> active# X, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# quote X -> active# X, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# quote X -> active# X, active# indx(X1, X2) -> indx#(active X1, X2)) (active# quote X -> active# X, active# indx(X1, X2) -> active# X1) (active# quote X -> active# X, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# quote X -> active# X, active# sel(X1, X2) -> sel#(active X1, X2)) (active# quote X -> active# X, active# sel(X1, X2) -> sel#(X1, active X2)) (active# quote X -> active# X, active# sel(X1, X2) -> active# X2) (active# quote X -> active# X, active# sel(X1, X2) -> active# X1) (active# quote X -> active# X, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# quote X -> active# X, active# dbls cons(X, Y) -> dbls# Y) (active# quote X -> active# X, active# dbls cons(X, Y) -> dbl# X) (active# quote X -> active# X, active# dbls X -> dbls# active X) (active# quote X -> active# X, active# dbls X -> active# X) (active# quote X -> active# X, active# dbl s X -> s# s dbl X) (active# quote X -> active# X, active# dbl s X -> s# dbl X) (active# quote X -> active# X, active# dbl s X -> dbl# X) (active# quote X -> active# X, active# dbl X -> dbl# active X) (active# quote X -> active# X, active# dbl X -> active# X) (active# quote s X -> quote# X, quote# ok X -> quote# X) (active# quote s X -> quote# X, quote# mark X -> quote# X) (dbl# ok X -> dbl# X, dbl# ok X -> dbl# X) (dbl# ok X -> dbl# X, dbl# mark X -> dbl# X) (dbls# mark X -> dbls# X, dbls# ok X -> dbls# X) (dbls# mark X -> dbls# X, dbls# mark X -> dbls# X) (from# ok X -> from# X, from# ok X -> from# X) (dbl1# ok X -> dbl1# X, dbl1# ok X -> dbl1# X) (dbl1# ok X -> dbl1# X, dbl1# mark X -> dbl1# X) (s1# ok X -> s1# X, s1# ok X -> s1# X) (s1# ok X -> s1# X, s1# mark X -> s1# X) (quote# ok X -> quote# X, quote# ok X -> quote# X) (quote# ok X -> quote# X, quote# mark X -> quote# X) (proper# s X -> proper# X, proper# quote X -> proper# X) (proper# s X -> proper# X, proper# quote X -> quote# proper X) (proper# s X -> proper# X, proper# sel1(X1, X2) -> proper# X2) (proper# s X -> proper# X, proper# sel1(X1, X2) -> proper# X1) (proper# s X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# s X -> proper# X, proper# s1 X -> proper# X) (proper# s X -> proper# X, proper# s1 X -> s1# proper X) (proper# s X -> proper# X, proper# dbl1 X -> proper# X) (proper# s X -> proper# X, proper# dbl1 X -> dbl1# proper X) (proper# s X -> proper# X, proper# from X -> proper# X) (proper# s X -> proper# X, proper# from X -> from# proper X) (proper# s X -> proper# X, proper# indx(X1, X2) -> proper# X2) (proper# s X -> proper# X, proper# indx(X1, X2) -> proper# X1) (proper# s X -> proper# X, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# s X -> proper# X, proper# sel(X1, X2) -> proper# X2) (proper# s X -> proper# X, proper# sel(X1, X2) -> proper# X1) (proper# s X -> proper# X, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# s X -> proper# X, proper# cons(X1, X2) -> proper# X2) (proper# s X -> proper# X, proper# cons(X1, X2) -> proper# X1) (proper# s X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# s X -> proper# X, proper# dbls X -> proper# X) (proper# s X -> proper# X, proper# dbls X -> dbls# proper X) (proper# s X -> proper# X, proper# s X -> proper# X) (proper# s X -> proper# X, proper# s X -> s# proper X) (proper# s X -> proper# X, proper# dbl X -> proper# X) (proper# s X -> proper# X, proper# dbl X -> dbl# proper X) (proper# from X -> proper# X, proper# quote X -> proper# X) (proper# from X -> proper# X, proper# quote X -> quote# proper X) (proper# from X -> proper# X, proper# sel1(X1, X2) -> proper# X2) (proper# from X -> proper# X, proper# sel1(X1, X2) -> proper# X1) (proper# from X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# from X -> proper# X, proper# s1 X -> proper# X) (proper# from X -> proper# X, proper# s1 X -> s1# proper X) (proper# from X -> proper# X, proper# dbl1 X -> proper# X) (proper# from X -> proper# X, proper# dbl1 X -> dbl1# proper X) (proper# from X -> proper# X, proper# from X -> proper# X) (proper# from X -> proper# X, proper# from X -> from# proper X) (proper# from X -> proper# X, proper# indx(X1, X2) -> proper# X2) (proper# from X -> proper# X, proper# indx(X1, X2) -> proper# X1) (proper# from X -> proper# X, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# from X -> proper# X, proper# sel(X1, X2) -> proper# X2) (proper# from X -> proper# X, proper# sel(X1, X2) -> proper# X1) (proper# from X -> proper# X, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# from X -> proper# X, proper# cons(X1, X2) -> proper# X2) (proper# from X -> proper# X, proper# cons(X1, X2) -> proper# X1) (proper# from X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# from X -> proper# X, proper# dbls X -> proper# X) (proper# from X -> proper# X, proper# dbls X -> dbls# proper X) (proper# from X -> proper# X, proper# s X -> proper# X) (proper# from X -> proper# X, proper# s X -> s# proper X) (proper# from X -> proper# X, proper# dbl X -> proper# X) (proper# from X -> proper# X, proper# dbl X -> dbl# proper X) (proper# s1 X -> proper# X, proper# quote X -> proper# X) (proper# s1 X -> proper# X, proper# quote X -> quote# proper X) (proper# s1 X -> proper# X, proper# sel1(X1, X2) -> proper# X2) (proper# s1 X -> proper# X, proper# sel1(X1, X2) -> proper# X1) (proper# s1 X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# s1 X -> proper# X, proper# s1 X -> proper# X) (proper# s1 X -> proper# X, proper# s1 X -> s1# proper X) (proper# s1 X -> proper# X, proper# dbl1 X -> proper# X) (proper# s1 X -> proper# X, proper# dbl1 X -> dbl1# proper X) (proper# s1 X -> proper# X, proper# from X -> proper# X) (proper# s1 X -> proper# X, proper# from X -> from# proper X) (proper# s1 X -> proper# X, proper# indx(X1, X2) -> proper# X2) (proper# s1 X -> proper# X, proper# indx(X1, X2) -> proper# X1) (proper# s1 X -> proper# X, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# s1 X -> proper# X, proper# sel(X1, X2) -> proper# X2) (proper# s1 X -> proper# X, proper# sel(X1, X2) -> proper# X1) (proper# s1 X -> proper# X, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# s1 X -> proper# X, proper# cons(X1, X2) -> proper# X2) (proper# s1 X -> proper# X, proper# cons(X1, X2) -> proper# X1) (proper# s1 X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# s1 X -> proper# X, proper# dbls X -> proper# X) (proper# s1 X -> proper# X, proper# dbls X -> dbls# proper X) (proper# s1 X -> proper# X, proper# s X -> proper# X) (proper# s1 X -> proper# X, proper# s X -> s# proper X) (proper# s1 X -> proper# X, proper# dbl X -> proper# X) (proper# s1 X -> proper# X, proper# dbl X -> dbl# proper X) (top# mark X -> proper# X, proper# quote X -> proper# X) (top# mark X -> proper# X, proper# quote X -> quote# proper X) (top# mark X -> proper# X, proper# sel1(X1, X2) -> proper# X2) (top# mark X -> proper# X, proper# sel1(X1, X2) -> proper# X1) (top# mark X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (top# mark X -> proper# X, proper# s1 X -> proper# X) (top# mark X -> proper# X, proper# s1 X -> s1# proper X) (top# mark X -> proper# X, proper# dbl1 X -> proper# X) (top# mark X -> proper# X, proper# dbl1 X -> dbl1# proper X) (top# mark X -> proper# X, proper# from X -> proper# X) (top# mark X -> proper# X, proper# from X -> from# proper X) (top# mark X -> proper# X, proper# indx(X1, X2) -> proper# X2) (top# mark X -> proper# X, proper# indx(X1, X2) -> proper# X1) (top# mark X -> proper# X, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (top# mark X -> proper# X, proper# sel(X1, X2) -> proper# X2) (top# mark X -> proper# X, proper# sel(X1, X2) -> proper# X1) (top# mark X -> proper# X, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (top# mark X -> proper# X, proper# cons(X1, X2) -> proper# X2) (top# mark X -> proper# X, proper# cons(X1, X2) -> proper# X1) (top# mark X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (top# mark X -> proper# X, proper# dbls X -> proper# X) (top# mark X -> proper# X, proper# dbls X -> dbls# proper X) (top# mark X -> proper# X, proper# s X -> proper# X) (top# mark X -> proper# X, proper# s X -> s# proper X) (top# mark X -> proper# X, proper# dbl X -> proper# X) (top# mark X -> proper# X, proper# dbl X -> dbl# proper X) (active# from X -> cons#(X, from s X), cons#(ok X1, ok X2) -> cons#(X1, X2)) (active# dbl1 s X -> s1# s1 dbl1 X, s1# ok X -> s1# X) (active# dbl1 s X -> s1# s1 dbl1 X, s1# mark X -> s1# X) (active# sel(X1, X2) -> sel#(active X1, X2), sel#(ok X1, ok X2) -> sel#(X1, X2)) (active# sel(X1, X2) -> sel#(active X1, X2), sel#(mark X1, X2) -> sel#(X1, X2)) (active# sel(X1, X2) -> sel#(active X1, X2), sel#(X1, mark X2) -> sel#(X1, X2)) (active# sel1(X1, X2) -> sel1#(active X1, X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2)) (active# sel1(X1, X2) -> sel1#(active X1, X2), sel1#(mark X1, X2) -> sel1#(X1, X2)) (active# sel1(X1, X2) -> sel1#(active X1, X2), sel1#(X1, mark X2) -> sel1#(X1, X2)) (active# indx(cons(X, Y), Z) -> sel#(X, Z), sel#(ok X1, ok X2) -> sel#(X1, X2)) (active# indx(cons(X, Y), Z) -> sel#(X, Z), sel#(mark X1, X2) -> sel#(X1, X2)) (active# indx(cons(X, Y), Z) -> sel#(X, Z), sel#(X1, mark X2) -> sel#(X1, X2)) (active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z), sel1#(ok X1, ok X2) -> sel1#(X1, X2)) (active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z), sel1#(mark X1, X2) -> sel1#(X1, X2)) (active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z), sel1#(X1, mark X2) -> sel1#(X1, X2)) (active# indx(cons(X, Y), Z) -> indx#(Y, Z), indx#(mark X1, X2) -> indx#(X1, X2)) (active# indx(cons(X, Y), Z) -> indx#(Y, Z), indx#(ok X1, ok X2) -> indx#(X1, X2)) (active# sel(s X, cons(Y, Z)) -> sel#(X, Z), sel#(X1, mark X2) -> sel#(X1, X2)) (active# sel(s X, cons(Y, Z)) -> sel#(X, Z), sel#(mark X1, X2) -> sel#(X1, X2)) (active# sel(s X, cons(Y, Z)) -> sel#(X, Z), sel#(ok X1, ok X2) -> sel#(X1, X2)) (active# indx(X1, X2) -> indx#(active X1, X2), indx#(mark X1, X2) -> indx#(X1, X2)) (active# indx(X1, X2) -> indx#(active X1, X2), indx#(ok X1, ok X2) -> indx#(X1, X2)) (active# quote sel(X, Y) -> sel1#(X, Y), sel1#(X1, mark X2) -> sel1#(X1, X2)) (active# quote sel(X, Y) -> sel1#(X, Y), sel1#(mark X1, X2) -> sel1#(X1, X2)) (active# quote sel(X, Y) -> sel1#(X, Y), sel1#(ok X1, ok X2) -> sel1#(X1, X2)) (active# dbl s X -> s# s dbl X, s# ok X -> s# X) (top# ok X -> active# X, active# dbl X -> active# X) (top# ok X -> active# X, active# dbl X -> dbl# active X) (top# ok X -> active# X, active# dbl s X -> dbl# X) (top# ok X -> active# X, active# dbl s X -> s# dbl X) (top# ok X -> active# X, active# dbl s X -> s# s dbl X) (top# ok X -> active# X, active# dbls X -> active# X) (top# ok X -> active# X, active# dbls X -> dbls# active X) (top# ok X -> active# X, active# dbls cons(X, Y) -> dbl# X) (top# ok X -> active# X, active# dbls cons(X, Y) -> dbls# Y) (top# ok X -> active# X, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (top# ok X -> active# X, active# sel(X1, X2) -> active# X1) (top# ok X -> active# X, active# sel(X1, X2) -> active# X2) (top# ok X -> active# X, active# sel(X1, X2) -> sel#(X1, active X2)) (top# ok X -> active# X, active# sel(X1, X2) -> sel#(active X1, X2)) (top# ok X -> active# X, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (top# ok X -> active# X, active# indx(X1, X2) -> active# X1) (top# ok X -> active# X, active# indx(X1, X2) -> indx#(active X1, X2)) (top# ok X -> active# X, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (top# ok X -> active# X, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (top# ok X -> active# X, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (top# ok X -> active# X, active# from X -> s# X) (top# ok X -> active# X, active# from X -> cons#(X, from s X)) (top# ok X -> active# X, active# from X -> from# s X) (top# ok X -> active# X, active# dbl1 X -> active# X) (top# ok X -> active# X, active# dbl1 X -> dbl1# active X) (top# ok X -> active# X, active# dbl1 s X -> dbl1# X) (top# ok X -> active# X, active# dbl1 s X -> s1# dbl1 X) (top# ok X -> active# X, active# dbl1 s X -> s1# s1 dbl1 X) (top# ok X -> active# X, active# s1 X -> active# X) (top# ok X -> active# X, active# s1 X -> s1# active X) (top# ok X -> active# X, active# sel1(X1, X2) -> active# X1) (top# ok X -> active# X, active# sel1(X1, X2) -> active# X2) (top# ok X -> active# X, active# sel1(X1, X2) -> sel1#(X1, active X2)) (top# ok X -> active# X, active# sel1(X1, X2) -> sel1#(active X1, X2)) (top# ok X -> active# X, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (top# ok X -> active# X, active# quote X -> active# X) (top# ok X -> active# X, active# quote X -> quote# active X) (top# ok X -> active# X, active# quote dbl X -> dbl1# X) (top# ok X -> active# X, active# quote s X -> s1# quote X) (top# ok X -> active# X, active# quote s X -> quote# X) (top# ok X -> active# X, active# quote sel(X, Y) -> sel1#(X, Y)) (proper# quote X -> proper# X, proper# dbl X -> dbl# proper X) (proper# quote X -> proper# X, proper# dbl X -> proper# X) (proper# quote X -> proper# X, proper# s X -> s# proper X) (proper# quote X -> proper# X, proper# s X -> proper# X) (proper# quote X -> proper# X, proper# dbls X -> dbls# proper X) (proper# quote X -> proper# X, proper# dbls X -> proper# X) (proper# quote X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# quote X -> proper# X, proper# cons(X1, X2) -> proper# X1) (proper# quote X -> proper# X, proper# cons(X1, X2) -> proper# X2) (proper# quote X -> proper# X, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# quote X -> proper# X, proper# sel(X1, X2) -> proper# X1) (proper# quote X -> proper# X, proper# sel(X1, X2) -> proper# X2) (proper# quote X -> proper# X, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# quote X -> proper# X, proper# indx(X1, X2) -> proper# X1) (proper# quote X -> proper# X, proper# indx(X1, X2) -> proper# X2) (proper# quote X -> proper# X, proper# from X -> from# proper X) (proper# quote X -> proper# X, proper# from X -> proper# X) (proper# quote X -> proper# X, proper# dbl1 X -> dbl1# proper X) (proper# quote X -> proper# X, proper# dbl1 X -> proper# X) (proper# quote X -> proper# X, proper# s1 X -> s1# proper X) (proper# quote X -> proper# X, proper# s1 X -> proper# X) (proper# quote X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# quote X -> proper# X, proper# sel1(X1, X2) -> proper# X1) (proper# quote X -> proper# X, proper# sel1(X1, X2) -> proper# X2) (proper# quote X -> proper# X, proper# quote X -> quote# proper X) (proper# quote X -> proper# X, proper# quote X -> proper# X) (proper# dbl1 X -> proper# X, proper# dbl X -> dbl# proper X) (proper# dbl1 X -> proper# X, proper# dbl X -> proper# X) (proper# dbl1 X -> proper# X, proper# s X -> s# proper X) (proper# dbl1 X -> proper# X, proper# s X -> proper# X) (proper# dbl1 X -> proper# X, proper# dbls X -> dbls# proper X) (proper# dbl1 X -> proper# X, proper# dbls X -> proper# X) (proper# dbl1 X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# dbl1 X -> proper# X, proper# cons(X1, X2) -> proper# X1) (proper# dbl1 X -> proper# X, proper# cons(X1, X2) -> proper# X2) (proper# dbl1 X -> proper# X, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# dbl1 X -> proper# X, proper# sel(X1, X2) -> proper# X1) (proper# dbl1 X -> proper# X, proper# sel(X1, X2) -> proper# X2) (proper# dbl1 X -> proper# X, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# dbl1 X -> proper# X, proper# indx(X1, X2) -> proper# X1) (proper# dbl1 X -> proper# X, proper# indx(X1, X2) -> proper# X2) (proper# dbl1 X -> proper# X, proper# from X -> from# proper X) (proper# dbl1 X -> proper# X, proper# from X -> proper# X) (proper# dbl1 X -> proper# X, proper# dbl1 X -> dbl1# proper X) (proper# dbl1 X -> proper# X, proper# dbl1 X -> proper# X) (proper# dbl1 X -> proper# X, proper# s1 X -> s1# proper X) (proper# dbl1 X -> proper# X, proper# s1 X -> proper# X) (proper# dbl1 X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# dbl1 X -> proper# X, proper# sel1(X1, X2) -> proper# X1) (proper# dbl1 X -> proper# X, proper# sel1(X1, X2) -> proper# X2) (proper# dbl1 X -> proper# X, proper# quote X -> quote# proper X) (proper# dbl1 X -> proper# X, proper# quote X -> proper# X) (proper# dbls X -> proper# X, proper# dbl X -> dbl# proper X) (proper# dbls X -> proper# X, proper# dbl X -> proper# X) (proper# dbls X -> proper# X, proper# s X -> s# proper X) (proper# dbls X -> proper# X, proper# s X -> proper# X) (proper# dbls X -> proper# X, proper# dbls X -> dbls# proper X) (proper# dbls X -> proper# X, proper# dbls X -> proper# X) (proper# dbls X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# dbls X -> proper# X, proper# cons(X1, X2) -> proper# X1) (proper# dbls X -> proper# X, proper# cons(X1, X2) -> proper# X2) (proper# dbls X -> proper# X, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# dbls X -> proper# X, proper# sel(X1, X2) -> proper# X1) (proper# dbls X -> proper# X, proper# sel(X1, X2) -> proper# X2) (proper# dbls X -> proper# X, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# dbls X -> proper# X, proper# indx(X1, X2) -> proper# X1) (proper# dbls X -> proper# X, proper# indx(X1, X2) -> proper# X2) (proper# dbls X -> proper# X, proper# from X -> from# proper X) (proper# dbls X -> proper# X, proper# from X -> proper# X) (proper# dbls X -> proper# X, proper# dbl1 X -> dbl1# proper X) (proper# dbls X -> proper# X, proper# dbl1 X -> proper# X) (proper# dbls X -> proper# X, proper# s1 X -> s1# proper X) (proper# dbls X -> proper# X, proper# s1 X -> proper# X) (proper# dbls X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# dbls X -> proper# X, proper# sel1(X1, X2) -> proper# X1) (proper# dbls X -> proper# X, proper# sel1(X1, X2) -> proper# X2) (proper# dbls X -> proper# X, proper# quote X -> quote# proper X) (proper# dbls X -> proper# X, proper# quote X -> proper# X) (proper# dbl X -> proper# X, proper# dbl X -> dbl# proper X) (proper# dbl X -> proper# X, proper# dbl X -> proper# X) (proper# dbl X -> proper# X, proper# s X -> s# proper X) (proper# dbl X -> proper# X, proper# s X -> proper# X) (proper# dbl X -> proper# X, proper# dbls X -> dbls# proper X) (proper# dbl X -> proper# X, proper# dbls X -> proper# X) (proper# dbl X -> proper# X, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# dbl X -> proper# X, proper# cons(X1, X2) -> proper# X1) (proper# dbl X -> proper# X, proper# cons(X1, X2) -> proper# X2) (proper# dbl X -> proper# X, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# dbl X -> proper# X, proper# sel(X1, X2) -> proper# X1) (proper# dbl X -> proper# X, proper# sel(X1, X2) -> proper# X2) (proper# dbl X -> proper# X, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# dbl X -> proper# X, proper# indx(X1, X2) -> proper# X1) (proper# dbl X -> proper# X, proper# indx(X1, X2) -> proper# X2) (proper# dbl X -> proper# X, proper# from X -> from# proper X) (proper# dbl X -> proper# X, proper# from X -> proper# X) (proper# dbl X -> proper# X, proper# dbl1 X -> dbl1# proper X) (proper# dbl X -> proper# X, proper# dbl1 X -> proper# X) (proper# dbl X -> proper# X, proper# s1 X -> s1# proper X) (proper# dbl X -> proper# X, proper# s1 X -> proper# X) (proper# dbl X -> proper# X, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# dbl X -> proper# X, proper# sel1(X1, X2) -> proper# X1) (proper# dbl X -> proper# X, proper# sel1(X1, X2) -> proper# X2) (proper# dbl X -> proper# X, proper# quote X -> quote# proper X) (proper# dbl X -> proper# X, proper# quote X -> proper# X) (quote# mark X -> quote# X, quote# mark X -> quote# X) (quote# mark X -> quote# X, quote# ok X -> quote# X) (s1# mark X -> s1# X, s1# mark X -> s1# X) (s1# mark X -> s1# X, s1# ok X -> s1# X) (dbl1# mark X -> dbl1# X, dbl1# mark X -> dbl1# X) (dbl1# mark X -> dbl1# X, dbl1# ok X -> dbl1# X) (dbls# ok X -> dbls# X, dbls# mark X -> dbls# X) (dbls# ok X -> dbls# X, dbls# ok X -> dbls# X) (s# ok X -> s# X, s# ok X -> s# X) (dbl# mark X -> dbl# X, dbl# mark X -> dbl# X) (dbl# mark X -> dbl# X, dbl# ok X -> dbl# X) (active# quote dbl X -> dbl1# X, dbl1# mark X -> dbl1# X) (active# quote dbl X -> dbl1# X, dbl1# ok X -> dbl1# X) (active# s1 X -> active# X, active# dbl X -> active# X) (active# s1 X -> active# X, active# dbl X -> dbl# active X) (active# s1 X -> active# X, active# dbl s X -> dbl# X) (active# s1 X -> active# X, active# dbl s X -> s# dbl X) (active# s1 X -> active# X, active# dbl s X -> s# s dbl X) (active# s1 X -> active# X, active# dbls X -> active# X) (active# s1 X -> active# X, active# dbls X -> dbls# active X) (active# s1 X -> active# X, active# dbls cons(X, Y) -> dbl# X) (active# s1 X -> active# X, active# dbls cons(X, Y) -> dbls# Y) (active# s1 X -> active# X, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# s1 X -> active# X, active# sel(X1, X2) -> active# X1) (active# s1 X -> active# X, active# sel(X1, X2) -> active# X2) (active# s1 X -> active# X, active# sel(X1, X2) -> sel#(X1, active X2)) (active# s1 X -> active# X, active# sel(X1, X2) -> sel#(active X1, X2)) (active# s1 X -> active# X, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# s1 X -> active# X, active# indx(X1, X2) -> active# X1) (active# s1 X -> active# X, active# indx(X1, X2) -> indx#(active X1, X2)) (active# s1 X -> active# X, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# s1 X -> active# X, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# s1 X -> active# X, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# s1 X -> active# X, active# from X -> s# X) (active# s1 X -> active# X, active# from X -> cons#(X, from s X)) (active# s1 X -> active# X, active# from X -> from# s X) (active# s1 X -> active# X, active# dbl1 X -> active# X) (active# s1 X -> active# X, active# dbl1 X -> dbl1# active X) (active# s1 X -> active# X, active# dbl1 s X -> dbl1# X) (active# s1 X -> active# X, active# dbl1 s X -> s1# dbl1 X) (active# s1 X -> active# X, active# dbl1 s X -> s1# s1 dbl1 X) (active# s1 X -> active# X, active# s1 X -> active# X) (active# s1 X -> active# X, active# s1 X -> s1# active X) (active# s1 X -> active# X, active# sel1(X1, X2) -> active# X1) (active# s1 X -> active# X, active# sel1(X1, X2) -> active# X2) (active# s1 X -> active# X, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# s1 X -> active# X, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# s1 X -> active# X, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# s1 X -> active# X, active# quote X -> active# X) (active# s1 X -> active# X, active# quote X -> quote# active X) (active# s1 X -> active# X, active# quote dbl X -> dbl1# X) (active# s1 X -> active# X, active# quote s X -> s1# quote X) (active# s1 X -> active# X, active# quote s X -> quote# X) (active# s1 X -> active# X, active# quote sel(X, Y) -> sel1#(X, Y)) (active# dbl1 X -> active# X, active# dbl X -> active# X) (active# dbl1 X -> active# X, active# dbl X -> dbl# active X) (active# dbl1 X -> active# X, active# dbl s X -> dbl# X) (active# dbl1 X -> active# X, active# dbl s X -> s# dbl X) (active# dbl1 X -> active# X, active# dbl s X -> s# s dbl X) (active# dbl1 X -> active# X, active# dbls X -> active# X) (active# dbl1 X -> active# X, active# dbls X -> dbls# active X) (active# dbl1 X -> active# X, active# dbls cons(X, Y) -> dbl# X) (active# dbl1 X -> active# X, active# dbls cons(X, Y) -> dbls# Y) (active# dbl1 X -> active# X, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# dbl1 X -> active# X, active# sel(X1, X2) -> active# X1) (active# dbl1 X -> active# X, active# sel(X1, X2) -> active# X2) (active# dbl1 X -> active# X, active# sel(X1, X2) -> sel#(X1, active X2)) (active# dbl1 X -> active# X, active# sel(X1, X2) -> sel#(active X1, X2)) (active# dbl1 X -> active# X, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# dbl1 X -> active# X, active# indx(X1, X2) -> active# X1) (active# dbl1 X -> active# X, active# indx(X1, X2) -> indx#(active X1, X2)) (active# dbl1 X -> active# X, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# dbl1 X -> active# X, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# dbl1 X -> active# X, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# dbl1 X -> active# X, active# from X -> s# X) (active# dbl1 X -> active# X, active# from X -> cons#(X, from s X)) (active# dbl1 X -> active# X, active# from X -> from# s X) (active# dbl1 X -> active# X, active# dbl1 X -> active# X) (active# dbl1 X -> active# X, active# dbl1 X -> dbl1# active X) (active# dbl1 X -> active# X, active# dbl1 s X -> dbl1# X) (active# dbl1 X -> active# X, active# dbl1 s X -> s1# dbl1 X) (active# dbl1 X -> active# X, active# dbl1 s X -> s1# s1 dbl1 X) (active# dbl1 X -> active# X, active# s1 X -> active# X) (active# dbl1 X -> active# X, active# s1 X -> s1# active X) (active# dbl1 X -> active# X, active# sel1(X1, X2) -> active# X1) (active# dbl1 X -> active# X, active# sel1(X1, X2) -> active# X2) (active# dbl1 X -> active# X, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# dbl1 X -> active# X, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# dbl1 X -> active# X, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# dbl1 X -> active# X, active# quote X -> active# X) (active# dbl1 X -> active# X, active# quote X -> quote# active X) (active# dbl1 X -> active# X, active# quote dbl X -> dbl1# X) (active# dbl1 X -> active# X, active# quote s X -> s1# quote X) (active# dbl1 X -> active# X, active# quote s X -> quote# X) (active# dbl1 X -> active# X, active# quote sel(X, Y) -> sel1#(X, Y)) (active# dbls cons(X, Y) -> dbl# X, dbl# mark X -> dbl# X) (active# dbls cons(X, Y) -> dbl# X, dbl# ok X -> dbl# X) (active# dbl s X -> dbl# X, dbl# mark X -> dbl# X) (active# dbl s X -> dbl# X, dbl# ok X -> dbl# X) (active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z)), cons#(ok X1, ok X2) -> cons#(X1, X2)) (proper# indx(X1, X2) -> indx#(proper X1, proper X2), indx#(mark X1, X2) -> indx#(X1, X2)) (proper# indx(X1, X2) -> indx#(proper X1, proper X2), indx#(ok X1, ok X2) -> indx#(X1, X2)) (proper# cons(X1, X2) -> cons#(proper X1, proper X2), cons#(ok X1, ok X2) -> cons#(X1, X2)) (active# sel(X1, X2) -> sel#(X1, active X2), sel#(X1, mark X2) -> sel#(X1, X2)) (active# sel(X1, X2) -> sel#(X1, active X2), sel#(mark X1, X2) -> sel#(X1, X2)) (active# sel(X1, X2) -> sel#(X1, active X2), sel#(ok X1, ok X2) -> sel#(X1, X2)) (proper# sel1(X1, X2) -> proper# X1, proper# dbl X -> dbl# proper X) (proper# sel1(X1, X2) -> proper# X1, proper# dbl X -> proper# X) (proper# sel1(X1, X2) -> proper# X1, proper# s X -> s# proper X) (proper# sel1(X1, X2) -> proper# X1, proper# s X -> proper# X) (proper# sel1(X1, X2) -> proper# X1, proper# dbls X -> dbls# proper X) (proper# sel1(X1, X2) -> proper# X1, proper# dbls X -> proper# X) (proper# sel1(X1, X2) -> proper# X1, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# sel1(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X1) (proper# sel1(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X2) (proper# sel1(X1, X2) -> proper# X1, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# sel1(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X1) (proper# sel1(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X2) (proper# sel1(X1, X2) -> proper# X1, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# sel1(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X1) (proper# sel1(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X2) (proper# sel1(X1, X2) -> proper# X1, proper# from X -> from# proper X) (proper# sel1(X1, X2) -> proper# X1, proper# from X -> proper# X) (proper# sel1(X1, X2) -> proper# X1, proper# dbl1 X -> dbl1# proper X) (proper# sel1(X1, X2) -> proper# X1, proper# dbl1 X -> proper# X) (proper# sel1(X1, X2) -> proper# X1, proper# s1 X -> s1# proper X) (proper# sel1(X1, X2) -> proper# X1, proper# s1 X -> proper# X) (proper# sel1(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# sel1(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X1) (proper# sel1(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X2) (proper# sel1(X1, X2) -> proper# X1, proper# quote X -> quote# proper X) (proper# sel1(X1, X2) -> proper# X1, proper# quote X -> proper# X) (proper# sel(X1, X2) -> proper# X1, proper# dbl X -> dbl# proper X) (proper# sel(X1, X2) -> proper# X1, proper# dbl X -> proper# X) (proper# sel(X1, X2) -> proper# X1, proper# s X -> s# proper X) (proper# sel(X1, X2) -> proper# X1, proper# s X -> proper# X) (proper# sel(X1, X2) -> proper# X1, proper# dbls X -> dbls# proper X) (proper# sel(X1, X2) -> proper# X1, proper# dbls X -> proper# X) (proper# sel(X1, X2) -> proper# X1, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# sel(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X1) (proper# sel(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X2) (proper# sel(X1, X2) -> proper# X1, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# sel(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X1) (proper# sel(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X2) (proper# sel(X1, X2) -> proper# X1, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# sel(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X1) (proper# sel(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X2) (proper# sel(X1, X2) -> proper# X1, proper# from X -> from# proper X) (proper# sel(X1, X2) -> proper# X1, proper# from X -> proper# X) (proper# sel(X1, X2) -> proper# X1, proper# dbl1 X -> dbl1# proper X) (proper# sel(X1, X2) -> proper# X1, proper# dbl1 X -> proper# X) (proper# sel(X1, X2) -> proper# X1, proper# s1 X -> s1# proper X) (proper# sel(X1, X2) -> proper# X1, proper# s1 X -> proper# X) (proper# sel(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# sel(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X1) (proper# sel(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X2) (proper# sel(X1, X2) -> proper# X1, proper# quote X -> quote# proper X) (proper# sel(X1, X2) -> proper# X1, proper# quote X -> proper# X) (active# sel1(X1, X2) -> active# X1, active# dbl X -> active# X) (active# sel1(X1, X2) -> active# X1, active# dbl X -> dbl# active X) (active# sel1(X1, X2) -> active# X1, active# dbl s X -> dbl# X) (active# sel1(X1, X2) -> active# X1, active# dbl s X -> s# dbl X) (active# sel1(X1, X2) -> active# X1, active# dbl s X -> s# s dbl X) (active# sel1(X1, X2) -> active# X1, active# dbls X -> active# X) (active# sel1(X1, X2) -> active# X1, active# dbls X -> dbls# active X) (active# sel1(X1, X2) -> active# X1, active# dbls cons(X, Y) -> dbl# X) (active# sel1(X1, X2) -> active# X1, active# dbls cons(X, Y) -> dbls# Y) (active# sel1(X1, X2) -> active# X1, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# sel1(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X1) (active# sel1(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X2) (active# sel1(X1, X2) -> active# X1, active# sel(X1, X2) -> sel#(X1, active X2)) (active# sel1(X1, X2) -> active# X1, active# sel(X1, X2) -> sel#(active X1, X2)) (active# sel1(X1, X2) -> active# X1, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# sel1(X1, X2) -> active# X1, active# indx(X1, X2) -> active# X1) (active# sel1(X1, X2) -> active# X1, active# indx(X1, X2) -> indx#(active X1, X2)) (active# sel1(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# sel1(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# sel1(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# sel1(X1, X2) -> active# X1, active# from X -> s# X) (active# sel1(X1, X2) -> active# X1, active# from X -> cons#(X, from s X)) (active# sel1(X1, X2) -> active# X1, active# from X -> from# s X) (active# sel1(X1, X2) -> active# X1, active# dbl1 X -> active# X) (active# sel1(X1, X2) -> active# X1, active# dbl1 X -> dbl1# active X) (active# sel1(X1, X2) -> active# X1, active# dbl1 s X -> dbl1# X) (active# sel1(X1, X2) -> active# X1, active# dbl1 s X -> s1# dbl1 X) (active# sel1(X1, X2) -> active# X1, active# dbl1 s X -> s1# s1 dbl1 X) (active# sel1(X1, X2) -> active# X1, active# s1 X -> active# X) (active# sel1(X1, X2) -> active# X1, active# s1 X -> s1# active X) (active# sel1(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X1) (active# sel1(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X2) (active# sel1(X1, X2) -> active# X1, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# sel1(X1, X2) -> active# X1, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# sel1(X1, X2) -> active# X1, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# sel1(X1, X2) -> active# X1, active# quote X -> active# X) (active# sel1(X1, X2) -> active# X1, active# quote X -> quote# active X) (active# sel1(X1, X2) -> active# X1, active# quote dbl X -> dbl1# X) (active# sel1(X1, X2) -> active# X1, active# quote s X -> s1# quote X) (active# sel1(X1, X2) -> active# X1, active# quote s X -> quote# X) (active# sel1(X1, X2) -> active# X1, active# quote sel(X, Y) -> sel1#(X, Y)) (active# sel(X1, X2) -> active# X1, active# dbl X -> active# X) (active# sel(X1, X2) -> active# X1, active# dbl X -> dbl# active X) (active# sel(X1, X2) -> active# X1, active# dbl s X -> dbl# X) (active# sel(X1, X2) -> active# X1, active# dbl s X -> s# dbl X) (active# sel(X1, X2) -> active# X1, active# dbl s X -> s# s dbl X) (active# sel(X1, X2) -> active# X1, active# dbls X -> active# X) (active# sel(X1, X2) -> active# X1, active# dbls X -> dbls# active X) (active# sel(X1, X2) -> active# X1, active# dbls cons(X, Y) -> dbl# X) (active# sel(X1, X2) -> active# X1, active# dbls cons(X, Y) -> dbls# Y) (active# sel(X1, X2) -> active# X1, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# sel(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X1) (active# sel(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X2) (active# sel(X1, X2) -> active# X1, active# sel(X1, X2) -> sel#(X1, active X2)) (active# sel(X1, X2) -> active# X1, active# sel(X1, X2) -> sel#(active X1, X2)) (active# sel(X1, X2) -> active# X1, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# sel(X1, X2) -> active# X1, active# indx(X1, X2) -> active# X1) (active# sel(X1, X2) -> active# X1, active# indx(X1, X2) -> indx#(active X1, X2)) (active# sel(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# sel(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# sel(X1, X2) -> active# X1, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# sel(X1, X2) -> active# X1, active# from X -> s# X) (active# sel(X1, X2) -> active# X1, active# from X -> cons#(X, from s X)) (active# sel(X1, X2) -> active# X1, active# from X -> from# s X) (active# sel(X1, X2) -> active# X1, active# dbl1 X -> active# X) (active# sel(X1, X2) -> active# X1, active# dbl1 X -> dbl1# active X) (active# sel(X1, X2) -> active# X1, active# dbl1 s X -> dbl1# X) (active# sel(X1, X2) -> active# X1, active# dbl1 s X -> s1# dbl1 X) (active# sel(X1, X2) -> active# X1, active# dbl1 s X -> s1# s1 dbl1 X) (active# sel(X1, X2) -> active# X1, active# s1 X -> active# X) (active# sel(X1, X2) -> active# X1, active# s1 X -> s1# active X) (active# sel(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X1) (active# sel(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X2) (active# sel(X1, X2) -> active# X1, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# sel(X1, X2) -> active# X1, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# sel(X1, X2) -> active# X1, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# sel(X1, X2) -> active# X1, active# quote X -> active# X) (active# sel(X1, X2) -> active# X1, active# quote X -> quote# active X) (active# sel(X1, X2) -> active# X1, active# quote dbl X -> dbl1# X) (active# sel(X1, X2) -> active# X1, active# quote s X -> s1# quote X) (active# sel(X1, X2) -> active# X1, active# quote s X -> quote# X) (active# sel(X1, X2) -> active# X1, active# quote sel(X, Y) -> sel1#(X, Y)) (proper# sel1(X1, X2) -> proper# X2, proper# dbl X -> dbl# proper X) (proper# sel1(X1, X2) -> proper# X2, proper# dbl X -> proper# X) (proper# sel1(X1, X2) -> proper# X2, proper# s X -> s# proper X) (proper# sel1(X1, X2) -> proper# X2, proper# s X -> proper# X) (proper# sel1(X1, X2) -> proper# X2, proper# dbls X -> dbls# proper X) (proper# sel1(X1, X2) -> proper# X2, proper# dbls X -> proper# X) (proper# sel1(X1, X2) -> proper# X2, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# sel1(X1, X2) -> proper# X2, proper# cons(X1, X2) -> proper# X1) (proper# sel1(X1, X2) -> proper# X2, proper# cons(X1, X2) -> proper# X2) (proper# sel1(X1, X2) -> proper# X2, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# sel1(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X1) (proper# sel1(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X2) (proper# sel1(X1, X2) -> proper# X2, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# sel1(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X1) (proper# sel1(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X2) (proper# sel1(X1, X2) -> proper# X2, proper# from X -> from# proper X) (proper# sel1(X1, X2) -> proper# X2, proper# from X -> proper# X) (proper# sel1(X1, X2) -> proper# X2, proper# dbl1 X -> dbl1# proper X) (proper# sel1(X1, X2) -> proper# X2, proper# dbl1 X -> proper# X) (proper# sel1(X1, X2) -> proper# X2, proper# s1 X -> s1# proper X) (proper# sel1(X1, X2) -> proper# X2, proper# s1 X -> proper# X) (proper# sel1(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# sel1(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> proper# X1) (proper# sel1(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> proper# X2) (proper# sel1(X1, X2) -> proper# X2, proper# quote X -> quote# proper X) (proper# sel1(X1, X2) -> proper# X2, proper# quote X -> proper# X) (proper# sel(X1, X2) -> proper# X2, proper# dbl X -> dbl# proper X) (proper# sel(X1, X2) -> proper# X2, proper# dbl X -> proper# X) (proper# sel(X1, X2) -> proper# X2, proper# s X -> s# proper X) (proper# sel(X1, X2) -> proper# X2, proper# s X -> proper# X) (proper# sel(X1, X2) -> proper# X2, proper# dbls X -> dbls# proper X) (proper# sel(X1, X2) -> proper# X2, proper# dbls X -> proper# X) (proper# sel(X1, X2) -> proper# X2, proper# cons(X1, X2) -> cons#(proper X1, proper X2)) (proper# sel(X1, X2) -> proper# X2, proper# cons(X1, X2) -> proper# X1) (proper# sel(X1, X2) -> proper# X2, proper# cons(X1, X2) -> proper# X2) (proper# sel(X1, X2) -> proper# X2, proper# sel(X1, X2) -> sel#(proper X1, proper X2)) (proper# sel(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X1) (proper# sel(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X2) (proper# sel(X1, X2) -> proper# X2, proper# indx(X1, X2) -> indx#(proper X1, proper X2)) (proper# sel(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X1) (proper# sel(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X2) (proper# sel(X1, X2) -> proper# X2, proper# from X -> from# proper X) (proper# sel(X1, X2) -> proper# X2, proper# from X -> proper# X) (proper# sel(X1, X2) -> proper# X2, proper# dbl1 X -> dbl1# proper X) (proper# sel(X1, X2) -> proper# X2, proper# dbl1 X -> proper# X) (proper# sel(X1, X2) -> proper# X2, proper# s1 X -> s1# proper X) (proper# sel(X1, X2) -> proper# X2, proper# s1 X -> proper# X) (proper# sel(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> sel1#(proper X1, proper X2)) (proper# sel(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> proper# X1) (proper# sel(X1, X2) -> proper# X2, proper# sel1(X1, X2) -> proper# X2) (proper# sel(X1, X2) -> proper# X2, proper# quote X -> quote# proper X) (proper# sel(X1, X2) -> proper# X2, proper# quote X -> proper# X) (active# sel1(X1, X2) -> active# X2, active# dbl X -> active# X) (active# sel1(X1, X2) -> active# X2, active# dbl X -> dbl# active X) (active# sel1(X1, X2) -> active# X2, active# dbl s X -> dbl# X) (active# sel1(X1, X2) -> active# X2, active# dbl s X -> s# dbl X) (active# sel1(X1, X2) -> active# X2, active# dbl s X -> s# s dbl X) (active# sel1(X1, X2) -> active# X2, active# dbls X -> active# X) (active# sel1(X1, X2) -> active# X2, active# dbls X -> dbls# active X) (active# sel1(X1, X2) -> active# X2, active# dbls cons(X, Y) -> dbl# X) (active# sel1(X1, X2) -> active# X2, active# dbls cons(X, Y) -> dbls# Y) (active# sel1(X1, X2) -> active# X2, active# dbls cons(X, Y) -> cons#(dbl X, dbls Y)) (active# sel1(X1, X2) -> active# X2, active# sel(X1, X2) -> active# X1) (active# sel1(X1, X2) -> active# X2, active# sel(X1, X2) -> active# X2) (active# sel1(X1, X2) -> active# X2, active# sel(X1, X2) -> sel#(X1, active X2)) (active# sel1(X1, X2) -> active# X2, active# sel(X1, X2) -> sel#(active X1, X2)) (active# sel1(X1, X2) -> active# X2, active# sel(s X, cons(Y, Z)) -> sel#(X, Z)) (active# sel1(X1, X2) -> active# X2, active# indx(X1, X2) -> active# X1) (active# sel1(X1, X2) -> active# X2, active# indx(X1, X2) -> indx#(active X1, X2)) (active# sel1(X1, X2) -> active# X2, active# indx(cons(X, Y), Z) -> cons#(sel(X, Z), indx(Y, Z))) (active# sel1(X1, X2) -> active# X2, active# indx(cons(X, Y), Z) -> sel#(X, Z)) (active# sel1(X1, X2) -> active# X2, active# indx(cons(X, Y), Z) -> indx#(Y, Z)) (active# sel1(X1, X2) -> active# X2, active# from X -> s# X) (active# sel1(X1, X2) -> active# X2, active# from X -> cons#(X, from s X)) (active# sel1(X1, X2) -> active# X2, active# from X -> from# s X) (active# sel1(X1, X2) -> active# X2, active# dbl1 X -> active# X) (active# sel1(X1, X2) -> active# X2, active# dbl1 X -> dbl1# active X) (active# sel1(X1, X2) -> active# X2, active# dbl1 s X -> dbl1# X) (active# sel1(X1, X2) -> active# X2, active# dbl1 s X -> s1# dbl1 X) (active# sel1(X1, X2) -> active# X2, active# dbl1 s X -> s1# s1 dbl1 X) (active# sel1(X1, X2) -> active# X2, active# s1 X -> active# X) (active# sel1(X1, X2) -> active# X2, active# s1 X -> s1# active X) (active# sel1(X1, X2) -> active# X2, active# sel1(X1, X2) -> active# X1) (active# sel1(X1, X2) -> active# X2, active# sel1(X1, X2) -> active# X2) (active# sel1(X1, X2) -> active# X2, active# sel1(X1, X2) -> sel1#(X1, active X2)) (active# sel1(X1, X2) -> active# X2, active# sel1(X1, X2) -> sel1#(active X1, X2)) (active# sel1(X1, X2) -> active# X2, active# sel1(s X, cons(Y, Z)) -> sel1#(X, Z)) (active# sel1(X1, X2) -> active# X2, active# quote X -> active# X) (active# sel1(X1, X2) -> active# X2, active# quote X -> quote# active X) (active# sel1(X1, X2) -> active# X2, active# quote dbl X -> dbl1# X) (active# sel1(X1, X2) -> active# X2, active# quote s X -> s1# quote X) (active# sel1(X1, X2) -> active# X2, active# quote s X -> quote# X) (active# sel1(X1, X2) -> active# X2, active# quote sel(X, Y) -> sel1#(X, Y)) (sel1#(ok X1, ok X2) -> sel1#(X1, X2), sel1#(X1, mark X2) -> sel1#(X1, X2)) (sel1#(ok X1, ok X2) -> sel1#(X1, X2), sel1#(mark X1, X2) -> sel1#(X1, X2)) (sel1#(ok X1, ok X2) -> sel1#(X1, X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2)) (sel1#(X1, mark X2) -> sel1#(X1, X2), sel1#(X1, mark X2) -> sel1#(X1, X2)) (sel1#(X1, mark X2) -> sel1#(X1, X2), sel1#(mark X1, X2) -> sel1#(X1, X2)) (sel1#(X1, mark X2) -> sel1#(X1, X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2)) (indx#(mark X1, X2) -> indx#(X1, X2), indx#(mark X1, X2) -> indx#(X1, X2)) (indx#(mark X1, X2) -> indx#(X1, X2), indx#(ok X1, ok X2) -> indx#(X1, X2)) (sel#(mark X1, X2) -> sel#(X1, X2), sel#(X1, mark X2) -> sel#(X1, X2)) (sel#(mark X1, X2) -> sel#(X1, X2), sel#(mark X1, X2) -> sel#(X1, X2)) (sel#(mark X1, X2) -> sel#(X1, X2), sel#(ok X1, ok X2) -> sel#(X1, X2)) (cons#(ok X1, ok X2) -> cons#(X1, X2), cons#(ok X1, ok X2) -> cons#(X1, X2)) (top# mark X -> top# proper X, top# mark X -> proper# X) (top# mark X -> top# proper X, top# mark X -> top# proper X) (top# mark X -> top# proper X, top# ok X -> active# X) (top# mark X -> top# proper X, top# ok X -> top# active X) (proper# s1 X -> s1# proper X, s1# mark X -> s1# X) (proper# s1 X -> s1# proper X, s1# ok X -> s1# X) (proper# from X -> from# proper X, from# ok X -> from# X) (proper# s X -> s# proper X, s# ok X -> s# X) (active# quote s X -> s1# quote X, s1# mark X -> s1# X) (active# quote s X -> s1# quote X, s1# ok X -> s1# X) (active# s1 X -> s1# active X, s1# mark X -> s1# X) (active# s1 X -> s1# active X, s1# ok X -> s1# X) (active# dbl1 X -> dbl1# active X, dbl1# mark X -> dbl1# X) (active# dbl1 X -> dbl1# active X, dbl1# ok X -> dbl1# X) (active# dbls X -> dbls# active X, dbls# mark X -> dbls# X) (active# dbls X -> dbls# active X, dbls# ok X -> dbls# X) (active# dbl X -> dbl# active X, dbl# mark X -> dbl# X) (active# dbl X -> dbl# active X, dbl# ok X -> dbl# X) } STATUS: arrows: 0.881380 SCCS (14): Scc: {top# mark X -> top# proper X, top# ok X -> top# active X} Scc: { active# dbl X -> active# X, active# dbls X -> active# X, active# sel(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X2, active# indx(X1, X2) -> active# X1, active# dbl1 X -> active# X, active# s1 X -> active# X, active# sel1(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X2, active# quote X -> active# X} Scc: { proper# dbl X -> proper# X, proper# s X -> proper# X, proper# dbls X -> proper# X, proper# cons(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X2, proper# from X -> proper# X, proper# dbl1 X -> proper# X, proper# s1 X -> proper# X, proper# sel1(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X2, proper# quote X -> proper# X} Scc: { sel1#(X1, mark X2) -> sel1#(X1, X2), sel1#(mark X1, X2) -> sel1#(X1, X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2)} Scc: { indx#(mark X1, X2) -> indx#(X1, X2), indx#(ok X1, ok X2) -> indx#(X1, X2)} Scc: { sel#(X1, mark X2) -> sel#(X1, X2), sel#(mark X1, X2) -> sel#(X1, X2), sel#(ok X1, ok X2) -> sel#(X1, X2)} Scc: {cons#(ok X1, ok X2) -> cons#(X1, X2)} Scc: {quote# mark X -> quote# X, quote# ok X -> quote# X} Scc: {s1# mark X -> s1# X, s1# ok X -> s1# X} Scc: {dbl1# mark X -> dbl1# X, dbl1# ok X -> dbl1# X} Scc: {from# ok X -> from# X} Scc: {dbls# mark X -> dbls# X, dbls# ok X -> dbls# X} Scc: {s# ok X -> s# X} Scc: {dbl# mark X -> dbl# X, dbl# ok X -> dbl# X} SCC (2): Strict: {top# mark X -> top# proper X, top# ok X -> top# active X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (10): Strict: { active# dbl X -> active# X, active# dbls X -> active# X, active# sel(X1, X2) -> active# X1, active# sel(X1, X2) -> active# X2, active# indx(X1, X2) -> active# X1, active# dbl1 X -> active# X, active# s1 X -> active# X, active# sel1(X1, X2) -> active# X1, active# sel1(X1, X2) -> active# X2, active# quote X -> active# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (15): Strict: { proper# dbl X -> proper# X, proper# s X -> proper# X, proper# dbls X -> proper# X, proper# cons(X1, X2) -> proper# X1, proper# cons(X1, X2) -> proper# X2, proper# sel(X1, X2) -> proper# X1, proper# sel(X1, X2) -> proper# X2, proper# indx(X1, X2) -> proper# X1, proper# indx(X1, X2) -> proper# X2, proper# from X -> proper# X, proper# dbl1 X -> proper# X, proper# s1 X -> proper# X, proper# sel1(X1, X2) -> proper# X1, proper# sel1(X1, X2) -> proper# X2, proper# quote X -> proper# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (3): Strict: { sel1#(X1, mark X2) -> sel1#(X1, X2), sel1#(mark X1, X2) -> sel1#(X1, X2), sel1#(ok X1, ok X2) -> sel1#(X1, X2)} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (2): Strict: { indx#(mark X1, X2) -> indx#(X1, X2), indx#(ok X1, ok X2) -> indx#(X1, X2)} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (3): Strict: { sel#(X1, mark X2) -> sel#(X1, X2), sel#(mark X1, X2) -> sel#(X1, X2), sel#(ok X1, ok X2) -> sel#(X1, X2)} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (1): Strict: {cons#(ok X1, ok X2) -> cons#(X1, X2)} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (2): Strict: {quote# mark X -> quote# X, quote# ok X -> quote# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (2): Strict: {s1# mark X -> s1# X, s1# ok X -> s1# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (2): Strict: {dbl1# mark X -> dbl1# X, dbl1# ok X -> dbl1# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (1): Strict: {from# ok X -> from# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (2): Strict: {dbls# mark X -> dbls# X, dbls# ok X -> dbls# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (1): Strict: {s# ok X -> s# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open SCC (2): Strict: {dbl# mark X -> dbl# X, dbl# ok X -> dbl# X} Weak: { active dbl X -> dbl active X, active dbl 0() -> mark 0(), active dbl s X -> mark s s dbl X, active dbls X -> dbls active X, active dbls nil() -> mark nil(), active dbls cons(X, Y) -> mark cons(dbl X, dbls Y), active sel(X1, X2) -> sel(X1, active X2), active sel(X1, X2) -> sel(active X1, X2), active sel(0(), cons(X, Y)) -> mark X, active sel(s X, cons(Y, Z)) -> mark sel(X, Z), active indx(X1, X2) -> indx(active X1, X2), active indx(nil(), X) -> mark nil(), active indx(cons(X, Y), Z) -> mark cons(sel(X, Z), indx(Y, Z)), active from X -> mark cons(X, from s X), active dbl1 X -> dbl1 active X, active dbl1 0() -> mark 01(), active dbl1 s X -> mark s1 s1 dbl1 X, active s1 X -> s1 active X, active sel1(X1, X2) -> sel1(X1, active X2), active sel1(X1, X2) -> sel1(active X1, X2), active sel1(0(), cons(X, Y)) -> mark X, active sel1(s X, cons(Y, Z)) -> mark sel1(X, Z), active quote X -> quote active X, active quote 0() -> mark 01(), active quote dbl X -> mark dbl1 X, active quote s X -> mark s1 quote X, active quote sel(X, Y) -> mark sel1(X, Y), dbl mark X -> mark dbl X, dbl ok X -> ok dbl X, s ok X -> ok s X, dbls mark X -> mark dbls X, dbls ok X -> ok dbls X, cons(ok X1, ok X2) -> ok cons(X1, X2), sel(X1, mark X2) -> mark sel(X1, X2), sel(mark X1, X2) -> mark sel(X1, X2), sel(ok X1, ok X2) -> ok sel(X1, X2), indx(mark X1, X2) -> mark indx(X1, X2), indx(ok X1, ok X2) -> ok indx(X1, X2), from ok X -> ok from X, dbl1 mark X -> mark dbl1 X, dbl1 ok X -> ok dbl1 X, s1 mark X -> mark s1 X, s1 ok X -> ok s1 X, sel1(X1, mark X2) -> mark sel1(X1, X2), sel1(mark X1, X2) -> mark sel1(X1, X2), sel1(ok X1, ok X2) -> ok sel1(X1, X2), quote mark X -> mark quote X, quote ok X -> ok quote X, proper 0() -> ok 0(), proper dbl X -> dbl proper X, proper s X -> s proper X, proper nil() -> ok nil(), proper dbls X -> dbls proper X, proper cons(X1, X2) -> cons(proper X1, proper X2), proper sel(X1, X2) -> sel(proper X1, proper X2), proper indx(X1, X2) -> indx(proper X1, proper X2), proper from X -> from proper X, proper 01() -> ok 01(), proper dbl1 X -> dbl1 proper X, proper s1 X -> s1 proper X, proper sel1(X1, X2) -> sel1(proper X1, proper X2), proper quote X -> quote proper X, top mark X -> top proper X, top ok X -> top active X} Open