MAYBE MAYBE TRS: { __(X1, mark(X2)) -> mark(__(X1, X2)), __(mark(X1), X2) -> mark(__(X1, X2)), __(ok(X1), ok(X2)) -> ok(__(X1, X2)), active(__(X, nil())) -> mark(X), active(__(X1, X2)) -> __(X1, active(X2)), active(__(X1, X2)) -> __(active(X1), X2), active(__(__(X, Y), Z)) -> mark(__(X, __(Y, Z))), active(__(nil(), X)) -> mark(X), active(U12(X1, X2)) -> U12(active(X1), X2), active(U12(tt(), V)) -> mark(U13(isNeList(V))), active(isPalListKind(__(V1, V2))) -> mark(U91(isPalListKind(V1), V2)), active(isPalListKind(nil())) -> mark(tt()), active(isPalListKind(a())) -> mark(tt()), active(isPalListKind(e())) -> mark(tt()), active(isPalListKind(i())) -> mark(tt()), active(isPalListKind(o())) -> mark(tt()), active(isPalListKind(u())) -> mark(tt()), active(U11(X1, X2)) -> U11(active(X1), X2), active(U11(tt(), V)) -> mark(U12(isPalListKind(V), V)), active(U13(X)) -> U13(active(X)), active(U13(tt())) -> mark(tt()), active(isNeList(V)) -> mark(U31(isPalListKind(V), V)), active(isNeList(__(V1, V2))) -> mark(U41(isPalListKind(V1), V1, V2)), active(isNeList(__(V1, V2))) -> mark(U51(isPalListKind(V1), V1, V2)), active(U22(X1, X2, X3)) -> U22(active(X1), X2, X3), active(U22(tt(), V1, V2)) -> mark(U23(isPalListKind(V2), V1, V2)), active(U21(X1, X2, X3)) -> U21(active(X1), X2, X3), active(U21(tt(), V1, V2)) -> mark(U22(isPalListKind(V1), V1, V2)), active(U23(X1, X2, X3)) -> U23(active(X1), X2, X3), active(U23(tt(), V1, V2)) -> mark(U24(isPalListKind(V2), V1, V2)), active(U24(X1, X2, X3)) -> U24(active(X1), X2, X3), active(U24(tt(), V1, V2)) -> mark(U25(isList(V1), V2)), active(U25(X1, X2)) -> U25(active(X1), X2), active(U25(tt(), V2)) -> mark(U26(isList(V2))), active(isList(V)) -> mark(U11(isPalListKind(V), V)), active(isList(__(V1, V2))) -> mark(U21(isPalListKind(V1), V1, V2)), active(isList(nil())) -> mark(tt()), active(U26(X)) -> U26(active(X)), active(U26(tt())) -> mark(tt()), active(U32(X1, X2)) -> U32(active(X1), X2), active(U32(tt(), V)) -> mark(U33(isQid(V))), active(U31(X1, X2)) -> U31(active(X1), X2), active(U31(tt(), V)) -> mark(U32(isPalListKind(V), V)), active(U33(X)) -> U33(active(X)), active(U33(tt())) -> mark(tt()), active(isQid(a())) -> mark(tt()), active(isQid(e())) -> mark(tt()), active(isQid(i())) -> mark(tt()), active(isQid(o())) -> mark(tt()), active(isQid(u())) -> mark(tt()), active(U42(X1, X2, X3)) -> U42(active(X1), X2, X3), active(U42(tt(), V1, V2)) -> mark(U43(isPalListKind(V2), V1, V2)), active(U41(X1, X2, X3)) -> U41(active(X1), X2, X3), active(U41(tt(), V1, V2)) -> mark(U42(isPalListKind(V1), V1, V2)), active(U43(X1, X2, X3)) -> U43(active(X1), X2, X3), active(U43(tt(), V1, V2)) -> mark(U44(isPalListKind(V2), V1, V2)), active(U44(X1, X2, X3)) -> U44(active(X1), X2, X3), active(U44(tt(), V1, V2)) -> mark(U45(isList(V1), V2)), active(U45(X1, X2)) -> U45(active(X1), X2), active(U45(tt(), V2)) -> mark(U46(isNeList(V2))), active(U46(X)) -> U46(active(X)), active(U46(tt())) -> mark(tt()), active(U52(X1, X2, X3)) -> U52(active(X1), X2, X3), active(U52(tt(), V1, V2)) -> mark(U53(isPalListKind(V2), V1, V2)), active(U51(X1, X2, X3)) -> U51(active(X1), X2, X3), active(U51(tt(), V1, V2)) -> mark(U52(isPalListKind(V1), V1, V2)), active(U53(X1, X2, X3)) -> U53(active(X1), X2, X3), active(U53(tt(), V1, V2)) -> mark(U54(isPalListKind(V2), V1, V2)), active(U54(X1, X2, X3)) -> U54(active(X1), X2, X3), active(U54(tt(), V1, V2)) -> mark(U55(isNeList(V1), V2)), active(U55(X1, X2)) -> U55(active(X1), X2), active(U55(tt(), V2)) -> mark(U56(isList(V2))), active(U56(X)) -> U56(active(X)), active(U56(tt())) -> mark(tt()), active(U62(X1, X2)) -> U62(active(X1), X2), active(U62(tt(), V)) -> mark(U63(isQid(V))), active(U61(X1, X2)) -> U61(active(X1), X2), active(U61(tt(), V)) -> mark(U62(isPalListKind(V), V)), active(U63(X)) -> U63(active(X)), active(U63(tt())) -> mark(tt()), active(U72(X1, X2)) -> U72(active(X1), X2), active(U72(tt(), P)) -> mark(U73(isPal(P), P)), active(U71(X1, X2, X3)) -> U71(active(X1), X2, X3), active(U71(tt(), I, P)) -> mark(U72(isPalListKind(I), P)), active(U73(X1, X2)) -> U73(active(X1), X2), active(U73(tt(), P)) -> mark(U74(isPalListKind(P))), active(isPal(V)) -> mark(U81(isPalListKind(V), V)), active(isPal(nil())) -> mark(tt()), active(U74(X)) -> U74(active(X)), active(U74(tt())) -> mark(tt()), active(U82(X1, X2)) -> U82(active(X1), X2), active(U82(tt(), V)) -> mark(U83(isNePal(V))), active(U81(X1, X2)) -> U81(active(X1), X2), active(U81(tt(), V)) -> mark(U82(isPalListKind(V), V)), active(U83(X)) -> U83(active(X)), active(U83(tt())) -> mark(tt()), active(isNePal(V)) -> mark(U61(isPalListKind(V), V)), active(isNePal(__(I, __(P, I)))) -> mark(U71(isQid(I), I, P)), active(U92(X)) -> U92(active(X)), active(U92(tt())) -> mark(tt()), active(U91(X1, X2)) -> U91(active(X1), X2), active(U91(tt(), V2)) -> mark(U92(isPalListKind(V2))), U12(mark(X1), X2) -> mark(U12(X1, X2)), U12(ok(X1), ok(X2)) -> ok(U12(X1, X2)), isPalListKind(ok(X)) -> ok(isPalListKind(X)), U11(mark(X1), X2) -> mark(U11(X1, X2)), U11(ok(X1), ok(X2)) -> ok(U11(X1, X2)), U13(mark(X)) -> mark(U13(X)), U13(ok(X)) -> ok(U13(X)), isNeList(ok(X)) -> ok(isNeList(X)), U22(mark(X1), X2, X3) -> mark(U22(X1, X2, X3)), U22(ok(X1), ok(X2), ok(X3)) -> ok(U22(X1, X2, X3)), U21(mark(X1), X2, X3) -> mark(U21(X1, X2, X3)), U21(ok(X1), ok(X2), ok(X3)) -> ok(U21(X1, X2, X3)), U23(mark(X1), X2, X3) -> mark(U23(X1, X2, X3)), U23(ok(X1), ok(X2), ok(X3)) -> ok(U23(X1, X2, X3)), U24(mark(X1), X2, X3) -> mark(U24(X1, X2, X3)), U24(ok(X1), ok(X2), ok(X3)) -> ok(U24(X1, X2, X3)), U25(mark(X1), X2) -> mark(U25(X1, X2)), U25(ok(X1), ok(X2)) -> ok(U25(X1, X2)), isList(ok(X)) -> ok(isList(X)), U26(mark(X)) -> mark(U26(X)), U26(ok(X)) -> ok(U26(X)), U32(mark(X1), X2) -> mark(U32(X1, X2)), U32(ok(X1), ok(X2)) -> ok(U32(X1, X2)), U31(mark(X1), X2) -> mark(U31(X1, X2)), U31(ok(X1), ok(X2)) -> ok(U31(X1, X2)), U33(mark(X)) -> mark(U33(X)), U33(ok(X)) -> ok(U33(X)), isQid(ok(X)) -> ok(isQid(X)), U42(mark(X1), X2, X3) -> mark(U42(X1, X2, X3)), U42(ok(X1), ok(X2), ok(X3)) -> ok(U42(X1, X2, X3)), U41(mark(X1), X2, X3) -> mark(U41(X1, X2, X3)), U41(ok(X1), ok(X2), ok(X3)) -> ok(U41(X1, X2, X3)), U43(mark(X1), X2, X3) -> mark(U43(X1, X2, X3)), U43(ok(X1), ok(X2), ok(X3)) -> ok(U43(X1, X2, X3)), U44(mark(X1), X2, X3) -> mark(U44(X1, X2, X3)), U44(ok(X1), ok(X2), ok(X3)) -> ok(U44(X1, X2, X3)), U45(mark(X1), X2) -> mark(U45(X1, X2)), U45(ok(X1), ok(X2)) -> ok(U45(X1, X2)), U46(mark(X)) -> mark(U46(X)), U46(ok(X)) -> ok(U46(X)), U52(mark(X1), X2, X3) -> mark(U52(X1, X2, X3)), U52(ok(X1), ok(X2), ok(X3)) -> ok(U52(X1, X2, X3)), U51(mark(X1), X2, X3) -> mark(U51(X1, X2, X3)), U51(ok(X1), ok(X2), ok(X3)) -> ok(U51(X1, X2, X3)), U53(mark(X1), X2, X3) -> mark(U53(X1, X2, X3)), U53(ok(X1), ok(X2), ok(X3)) -> ok(U53(X1, X2, X3)), U54(mark(X1), X2, X3) -> mark(U54(X1, X2, X3)), U54(ok(X1), ok(X2), ok(X3)) -> ok(U54(X1, X2, X3)), U55(mark(X1), X2) -> mark(U55(X1, X2)), U55(ok(X1), ok(X2)) -> ok(U55(X1, X2)), U56(mark(X)) -> mark(U56(X)), U56(ok(X)) -> ok(U56(X)), U62(mark(X1), X2) -> mark(U62(X1, X2)), U62(ok(X1), ok(X2)) -> ok(U62(X1, X2)), U61(mark(X1), X2) -> mark(U61(X1, X2)), U61(ok(X1), ok(X2)) -> ok(U61(X1, X2)), U63(mark(X)) -> mark(U63(X)), U63(ok(X)) -> ok(U63(X)), U72(mark(X1), X2) -> mark(U72(X1, X2)), U72(ok(X1), ok(X2)) -> ok(U72(X1, X2)), U71(mark(X1), X2, X3) -> mark(U71(X1, X2, X3)), U71(ok(X1), ok(X2), ok(X3)) -> ok(U71(X1, X2, X3)), U73(mark(X1), X2) -> mark(U73(X1, X2)), U73(ok(X1), ok(X2)) -> ok(U73(X1, X2)), isPal(ok(X)) -> ok(isPal(X)), U74(mark(X)) -> mark(U74(X)), U74(ok(X)) -> ok(U74(X)), U82(mark(X1), X2) -> mark(U82(X1, X2)), U82(ok(X1), ok(X2)) -> ok(U82(X1, X2)), U81(mark(X1), X2) -> mark(U81(X1, X2)), U81(ok(X1), ok(X2)) -> ok(U81(X1, X2)), U83(mark(X)) -> mark(U83(X)), U83(ok(X)) -> ok(U83(X)), isNePal(ok(X)) -> ok(isNePal(X)), U92(mark(X)) -> mark(U92(X)), U92(ok(X)) -> ok(U92(X)), U91(mark(X1), X2) -> mark(U91(X1, X2)), U91(ok(X1), ok(X2)) -> ok(U91(X1, X2)), proper(__(X1, X2)) -> __(proper(X1), proper(X2)), proper(nil()) -> ok(nil()), proper(U12(X1, X2)) -> U12(proper(X1), proper(X2)), proper(isPalListKind(X)) -> isPalListKind(proper(X)), proper(U11(X1, X2)) -> U11(proper(X1), proper(X2)), proper(tt()) -> ok(tt()), proper(U13(X)) -> U13(proper(X)), proper(isNeList(X)) -> isNeList(proper(X)), proper(U22(X1, X2, X3)) -> U22(proper(X1), proper(X2), proper(X3)), proper(U21(X1, X2, X3)) -> U21(proper(X1), proper(X2), proper(X3)), proper(U23(X1, X2, X3)) -> U23(proper(X1), proper(X2), proper(X3)), proper(U24(X1, X2, X3)) -> U24(proper(X1), proper(X2), proper(X3)), proper(U25(X1, X2)) -> U25(proper(X1), proper(X2)), proper(isList(X)) -> isList(proper(X)), proper(U26(X)) -> U26(proper(X)), proper(U32(X1, X2)) -> U32(proper(X1), proper(X2)), proper(U31(X1, X2)) -> U31(proper(X1), proper(X2)), proper(U33(X)) -> U33(proper(X)), proper(isQid(X)) -> isQid(proper(X)), proper(U42(X1, X2, X3)) -> U42(proper(X1), proper(X2), proper(X3)), proper(U41(X1, X2, X3)) -> U41(proper(X1), proper(X2), proper(X3)), proper(U43(X1, X2, X3)) -> U43(proper(X1), proper(X2), proper(X3)), proper(U44(X1, X2, X3)) -> U44(proper(X1), proper(X2), proper(X3)), proper(U45(X1, X2)) -> U45(proper(X1), proper(X2)), proper(U46(X)) -> U46(proper(X)), proper(U52(X1, X2, X3)) -> U52(proper(X1), proper(X2), proper(X3)), proper(U51(X1, X2, X3)) -> U51(proper(X1), proper(X2), proper(X3)), proper(U53(X1, X2, X3)) -> U53(proper(X1), proper(X2), proper(X3)), proper(U54(X1, X2, X3)) -> U54(proper(X1), proper(X2), proper(X3)), proper(U55(X1, X2)) -> U55(proper(X1), proper(X2)), proper(U56(X)) -> U56(proper(X)), proper(U62(X1, X2)) -> U62(proper(X1), proper(X2)), proper(U61(X1, X2)) -> U61(proper(X1), proper(X2)), proper(U63(X)) -> U63(proper(X)), proper(U72(X1, X2)) -> U72(proper(X1), proper(X2)), proper(U71(X1, X2, X3)) -> U71(proper(X1), proper(X2), proper(X3)), proper(U73(X1, X2)) -> U73(proper(X1), proper(X2)), proper(isPal(X)) -> isPal(proper(X)), proper(U74(X)) -> U74(proper(X)), proper(U82(X1, X2)) -> U82(proper(X1), proper(X2)), proper(U81(X1, X2)) -> U81(proper(X1), proper(X2)), proper(U83(X)) -> U83(proper(X)), proper(isNePal(X)) -> isNePal(proper(X)), proper(U92(X)) -> U92(proper(X)), proper(U91(X1, X2)) -> U91(proper(X1), proper(X2)), proper(a()) -> ok(a()), proper(e()) -> ok(e()), proper(i()) -> ok(i()), proper(o()) -> ok(o()), proper(u()) -> ok(u()), top(mark(X)) -> top(proper(X)), top(ok(X)) -> top(active(X)) } DUP: We consider a duplicating system. Trs: { __(X1, mark(X2)) -> mark(__(X1, X2)), __(mark(X1), X2) -> mark(__(X1, X2)), __(ok(X1), ok(X2)) -> ok(__(X1, X2)), active(__(X, nil())) -> mark(X), active(__(X1, X2)) -> __(X1, active(X2)), active(__(X1, X2)) -> __(active(X1), X2), active(__(__(X, Y), Z)) -> mark(__(X, __(Y, Z))), active(__(nil(), X)) -> mark(X), active(U12(X1, X2)) -> U12(active(X1), X2), active(U12(tt(), V)) -> mark(U13(isNeList(V))), active(isPalListKind(__(V1, V2))) -> mark(U91(isPalListKind(V1), V2)), active(isPalListKind(nil())) -> mark(tt()), active(isPalListKind(a())) -> mark(tt()), active(isPalListKind(e())) -> mark(tt()), active(isPalListKind(i())) -> mark(tt()), active(isPalListKind(o())) -> mark(tt()), active(isPalListKind(u())) -> mark(tt()), active(U11(X1, X2)) -> U11(active(X1), X2), active(U11(tt(), V)) -> mark(U12(isPalListKind(V), V)), active(U13(X)) -> U13(active(X)), active(U13(tt())) -> mark(tt()), active(isNeList(V)) -> mark(U31(isPalListKind(V), V)), active(isNeList(__(V1, V2))) -> mark(U41(isPalListKind(V1), V1, V2)), active(isNeList(__(V1, V2))) -> mark(U51(isPalListKind(V1), V1, V2)), active(U22(X1, X2, X3)) -> U22(active(X1), X2, X3), active(U22(tt(), V1, V2)) -> mark(U23(isPalListKind(V2), V1, V2)), active(U21(X1, X2, X3)) -> U21(active(X1), X2, X3), active(U21(tt(), V1, V2)) -> mark(U22(isPalListKind(V1), V1, V2)), active(U23(X1, X2, X3)) -> U23(active(X1), X2, X3), active(U23(tt(), V1, V2)) -> mark(U24(isPalListKind(V2), V1, V2)), active(U24(X1, X2, X3)) -> U24(active(X1), X2, X3), active(U24(tt(), V1, V2)) -> mark(U25(isList(V1), V2)), active(U25(X1, X2)) -> U25(active(X1), X2), active(U25(tt(), V2)) -> mark(U26(isList(V2))), active(isList(V)) -> mark(U11(isPalListKind(V), V)), active(isList(__(V1, V2))) -> mark(U21(isPalListKind(V1), V1, V2)), active(isList(nil())) -> mark(tt()), active(U26(X)) -> U26(active(X)), active(U26(tt())) -> mark(tt()), active(U32(X1, X2)) -> U32(active(X1), X2), active(U32(tt(), V)) -> mark(U33(isQid(V))), active(U31(X1, X2)) -> U31(active(X1), X2), active(U31(tt(), V)) -> mark(U32(isPalListKind(V), V)), active(U33(X)) -> U33(active(X)), active(U33(tt())) -> mark(tt()), active(isQid(a())) -> mark(tt()), active(isQid(e())) -> mark(tt()), active(isQid(i())) -> mark(tt()), active(isQid(o())) -> mark(tt()), active(isQid(u())) -> mark(tt()), active(U42(X1, X2, X3)) -> U42(active(X1), X2, X3), active(U42(tt(), V1, V2)) -> mark(U43(isPalListKind(V2), V1, V2)), active(U41(X1, X2, X3)) -> U41(active(X1), X2, X3), active(U41(tt(), V1, V2)) -> mark(U42(isPalListKind(V1), V1, V2)), active(U43(X1, X2, X3)) -> U43(active(X1), X2, X3), active(U43(tt(), V1, V2)) -> mark(U44(isPalListKind(V2), V1, V2)), active(U44(X1, X2, X3)) -> U44(active(X1), X2, X3), active(U44(tt(), V1, V2)) -> mark(U45(isList(V1), V2)), active(U45(X1, X2)) -> U45(active(X1), X2), active(U45(tt(), V2)) -> mark(U46(isNeList(V2))), active(U46(X)) -> U46(active(X)), active(U46(tt())) -> mark(tt()), active(U52(X1, X2, X3)) -> U52(active(X1), X2, X3), active(U52(tt(), V1, V2)) -> mark(U53(isPalListKind(V2), V1, V2)), active(U51(X1, X2, X3)) -> U51(active(X1), X2, X3), active(U51(tt(), V1, V2)) -> mark(U52(isPalListKind(V1), V1, V2)), active(U53(X1, X2, X3)) -> U53(active(X1), X2, X3), active(U53(tt(), V1, V2)) -> mark(U54(isPalListKind(V2), V1, V2)), active(U54(X1, X2, X3)) -> U54(active(X1), X2, X3), active(U54(tt(), V1, V2)) -> mark(U55(isNeList(V1), V2)), active(U55(X1, X2)) -> U55(active(X1), X2), active(U55(tt(), V2)) -> mark(U56(isList(V2))), active(U56(X)) -> U56(active(X)), active(U56(tt())) -> mark(tt()), active(U62(X1, X2)) -> U62(active(X1), X2), active(U62(tt(), V)) -> mark(U63(isQid(V))), active(U61(X1, X2)) -> U61(active(X1), X2), active(U61(tt(), V)) -> mark(U62(isPalListKind(V), V)), active(U63(X)) -> U63(active(X)), active(U63(tt())) -> mark(tt()), active(U72(X1, X2)) -> U72(active(X1), X2), active(U72(tt(), P)) -> mark(U73(isPal(P), P)), active(U71(X1, X2, X3)) -> U71(active(X1), X2, X3), active(U71(tt(), I, P)) -> mark(U72(isPalListKind(I), P)), active(U73(X1, X2)) -> U73(active(X1), X2), active(U73(tt(), P)) -> mark(U74(isPalListKind(P))), active(isPal(V)) -> mark(U81(isPalListKind(V), V)), active(isPal(nil())) -> mark(tt()), active(U74(X)) -> U74(active(X)), active(U74(tt())) -> mark(tt()), active(U82(X1, X2)) -> U82(active(X1), X2), active(U82(tt(), V)) -> mark(U83(isNePal(V))), active(U81(X1, X2)) -> U81(active(X1), X2), active(U81(tt(), V)) -> mark(U82(isPalListKind(V), V)), active(U83(X)) -> U83(active(X)), active(U83(tt())) -> mark(tt()), active(isNePal(V)) -> mark(U61(isPalListKind(V), V)), active(isNePal(__(I, __(P, I)))) -> mark(U71(isQid(I), I, P)), active(U92(X)) -> U92(active(X)), active(U92(tt())) -> mark(tt()), active(U91(X1, X2)) -> U91(active(X1), X2), active(U91(tt(), V2)) -> mark(U92(isPalListKind(V2))), U12(mark(X1), X2) -> mark(U12(X1, X2)), U12(ok(X1), ok(X2)) -> ok(U12(X1, X2)), isPalListKind(ok(X)) -> ok(isPalListKind(X)), U11(mark(X1), X2) -> mark(U11(X1, X2)), U11(ok(X1), ok(X2)) -> ok(U11(X1, X2)), U13(mark(X)) -> mark(U13(X)), U13(ok(X)) -> ok(U13(X)), isNeList(ok(X)) -> ok(isNeList(X)), U22(mark(X1), X2, X3) -> mark(U22(X1, X2, X3)), U22(ok(X1), ok(X2), ok(X3)) -> ok(U22(X1, X2, X3)), U21(mark(X1), X2, X3) -> mark(U21(X1, X2, X3)), U21(ok(X1), ok(X2), ok(X3)) -> ok(U21(X1, X2, X3)), U23(mark(X1), X2, X3) -> mark(U23(X1, X2, X3)), U23(ok(X1), ok(X2), ok(X3)) -> ok(U23(X1, X2, X3)), U24(mark(X1), X2, X3) -> mark(U24(X1, X2, X3)), U24(ok(X1), ok(X2), ok(X3)) -> ok(U24(X1, X2, X3)), U25(mark(X1), X2) -> mark(U25(X1, X2)), U25(ok(X1), ok(X2)) -> ok(U25(X1, X2)), isList(ok(X)) -> ok(isList(X)), U26(mark(X)) -> mark(U26(X)), U26(ok(X)) -> ok(U26(X)), U32(mark(X1), X2) -> mark(U32(X1, X2)), U32(ok(X1), ok(X2)) -> ok(U32(X1, X2)), U31(mark(X1), X2) -> mark(U31(X1, X2)), U31(ok(X1), ok(X2)) -> ok(U31(X1, X2)), U33(mark(X)) -> mark(U33(X)), U33(ok(X)) -> ok(U33(X)), isQid(ok(X)) -> ok(isQid(X)), U42(mark(X1), X2, X3) -> mark(U42(X1, X2, X3)), U42(ok(X1), ok(X2), ok(X3)) -> ok(U42(X1, X2, X3)), U41(mark(X1), X2, X3) -> mark(U41(X1, X2, X3)), U41(ok(X1), ok(X2), ok(X3)) -> ok(U41(X1, X2, X3)), U43(mark(X1), X2, X3) -> mark(U43(X1, X2, X3)), U43(ok(X1), ok(X2), ok(X3)) -> ok(U43(X1, X2, X3)), U44(mark(X1), X2, X3) -> mark(U44(X1, X2, X3)), U44(ok(X1), ok(X2), ok(X3)) -> ok(U44(X1, X2, X3)), U45(mark(X1), X2) -> mark(U45(X1, X2)), U45(ok(X1), ok(X2)) -> ok(U45(X1, X2)), U46(mark(X)) -> mark(U46(X)), U46(ok(X)) -> ok(U46(X)), U52(mark(X1), X2, X3) -> mark(U52(X1, X2, X3)), U52(ok(X1), ok(X2), ok(X3)) -> ok(U52(X1, X2, X3)), U51(mark(X1), X2, X3) -> mark(U51(X1, X2, X3)), U51(ok(X1), ok(X2), ok(X3)) -> ok(U51(X1, X2, X3)), U53(mark(X1), X2, X3) -> mark(U53(X1, X2, X3)), U53(ok(X1), ok(X2), ok(X3)) -> ok(U53(X1, X2, X3)), U54(mark(X1), X2, X3) -> mark(U54(X1, X2, X3)), U54(ok(X1), ok(X2), ok(X3)) -> ok(U54(X1, X2, X3)), U55(mark(X1), X2) -> mark(U55(X1, X2)), U55(ok(X1), ok(X2)) -> ok(U55(X1, X2)), U56(mark(X)) -> mark(U56(X)), U56(ok(X)) -> ok(U56(X)), U62(mark(X1), X2) -> mark(U62(X1, X2)), U62(ok(X1), ok(X2)) -> ok(U62(X1, X2)), U61(mark(X1), X2) -> mark(U61(X1, X2)), U61(ok(X1), ok(X2)) -> ok(U61(X1, X2)), U63(mark(X)) -> mark(U63(X)), U63(ok(X)) -> ok(U63(X)), U72(mark(X1), X2) -> mark(U72(X1, X2)), U72(ok(X1), ok(X2)) -> ok(U72(X1, X2)), U71(mark(X1), X2, X3) -> mark(U71(X1, X2, X3)), U71(ok(X1), ok(X2), ok(X3)) -> ok(U71(X1, X2, X3)), U73(mark(X1), X2) -> mark(U73(X1, X2)), U73(ok(X1), ok(X2)) -> ok(U73(X1, X2)), isPal(ok(X)) -> ok(isPal(X)), U74(mark(X)) -> mark(U74(X)), U74(ok(X)) -> ok(U74(X)), U82(mark(X1), X2) -> mark(U82(X1, X2)), U82(ok(X1), ok(X2)) -> ok(U82(X1, X2)), U81(mark(X1), X2) -> mark(U81(X1, X2)), U81(ok(X1), ok(X2)) -> ok(U81(X1, X2)), U83(mark(X)) -> mark(U83(X)), U83(ok(X)) -> ok(U83(X)), isNePal(ok(X)) -> ok(isNePal(X)), U92(mark(X)) -> mark(U92(X)), U92(ok(X)) -> ok(U92(X)), U91(mark(X1), X2) -> mark(U91(X1, X2)), U91(ok(X1), ok(X2)) -> ok(U91(X1, X2)), proper(__(X1, X2)) -> __(proper(X1), proper(X2)), proper(nil()) -> ok(nil()), proper(U12(X1, X2)) -> U12(proper(X1), proper(X2)), proper(isPalListKind(X)) -> isPalListKind(proper(X)), proper(U11(X1, X2)) -> U11(proper(X1), proper(X2)), proper(tt()) -> ok(tt()), proper(U13(X)) -> U13(proper(X)), proper(isNeList(X)) -> isNeList(proper(X)), proper(U22(X1, X2, X3)) -> U22(proper(X1), proper(X2), proper(X3)), proper(U21(X1, X2, X3)) -> U21(proper(X1), proper(X2), proper(X3)), proper(U23(X1, X2, X3)) -> U23(proper(X1), proper(X2), proper(X3)), proper(U24(X1, X2, X3)) -> U24(proper(X1), proper(X2), proper(X3)), proper(U25(X1, X2)) -> U25(proper(X1), proper(X2)), proper(isList(X)) -> isList(proper(X)), proper(U26(X)) -> U26(proper(X)), proper(U32(X1, X2)) -> U32(proper(X1), proper(X2)), proper(U31(X1, X2)) -> U31(proper(X1), proper(X2)), proper(U33(X)) -> U33(proper(X)), proper(isQid(X)) -> isQid(proper(X)), proper(U42(X1, X2, X3)) -> U42(proper(X1), proper(X2), proper(X3)), proper(U41(X1, X2, X3)) -> U41(proper(X1), proper(X2), proper(X3)), proper(U43(X1, X2, X3)) -> U43(proper(X1), proper(X2), proper(X3)), proper(U44(X1, X2, X3)) -> U44(proper(X1), proper(X2), proper(X3)), proper(U45(X1, X2)) -> U45(proper(X1), proper(X2)), proper(U46(X)) -> U46(proper(X)), proper(U52(X1, X2, X3)) -> U52(proper(X1), proper(X2), proper(X3)), proper(U51(X1, X2, X3)) -> U51(proper(X1), proper(X2), proper(X3)), proper(U53(X1, X2, X3)) -> U53(proper(X1), proper(X2), proper(X3)), proper(U54(X1, X2, X3)) -> U54(proper(X1), proper(X2), proper(X3)), proper(U55(X1, X2)) -> U55(proper(X1), proper(X2)), proper(U56(X)) -> U56(proper(X)), proper(U62(X1, X2)) -> U62(proper(X1), proper(X2)), proper(U61(X1, X2)) -> U61(proper(X1), proper(X2)), proper(U63(X)) -> U63(proper(X)), proper(U72(X1, X2)) -> U72(proper(X1), proper(X2)), proper(U71(X1, X2, X3)) -> U71(proper(X1), proper(X2), proper(X3)), proper(U73(X1, X2)) -> U73(proper(X1), proper(X2)), proper(isPal(X)) -> isPal(proper(X)), proper(U74(X)) -> U74(proper(X)), proper(U82(X1, X2)) -> U82(proper(X1), proper(X2)), proper(U81(X1, X2)) -> U81(proper(X1), proper(X2)), proper(U83(X)) -> U83(proper(X)), proper(isNePal(X)) -> isNePal(proper(X)), proper(U92(X)) -> U92(proper(X)), proper(U91(X1, X2)) -> U91(proper(X1), proper(X2)), proper(a()) -> ok(a()), proper(e()) -> ok(e()), proper(i()) -> ok(i()), proper(o()) -> ok(o()), proper(u()) -> ok(u()), top(mark(X)) -> top(proper(X)), top(ok(X)) -> top(active(X)) } Fail