MAYBE

Problem:
 active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
 active(sel(0(),cons(X,Z))) -> mark(X)
 active(first(0(),Z)) -> mark(nil())
 active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
 active(from(X)) -> mark(cons(X,from(s(X))))
 active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
 active(sel1(0(),cons(X,Z))) -> mark(quote(X))
 active(first1(0(),Z)) -> mark(nil1())
 active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
 active(quote(0())) -> mark(01())
 active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
 active(quote1(nil())) -> mark(nil1())
 active(quote(s(X))) -> mark(s1(quote(X)))
 active(quote(sel(X,Z))) -> mark(sel1(X,Z))
 active(quote1(first(X,Z))) -> mark(first1(X,Z))
 active(unquote(01())) -> mark(0())
 active(unquote(s1(X))) -> mark(s(unquote(X)))
 active(unquote1(nil1())) -> mark(nil())
 active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
 active(fcons(X,Z)) -> mark(cons(X,Z))
 mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
 mark(s(X)) -> active(s(mark(X)))
 mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
 mark(0()) -> active(0())
 mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
 mark(nil()) -> active(nil())
 mark(from(X)) -> active(from(mark(X)))
 mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
 mark(quote(X)) -> active(quote(X))
 mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
 mark(nil1()) -> active(nil1())
 mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
 mark(01()) -> active(01())
 mark(quote1(X)) -> active(quote1(X))
 mark(s1(X)) -> active(s1(mark(X)))
 mark(unquote(X)) -> active(unquote(mark(X)))
 mark(unquote1(X)) -> active(unquote1(mark(X)))
 mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
 sel(mark(X1),X2) -> sel(X1,X2)
 sel(X1,mark(X2)) -> sel(X1,X2)
 sel(active(X1),X2) -> sel(X1,X2)
 sel(X1,active(X2)) -> sel(X1,X2)
 s(mark(X)) -> s(X)
 s(active(X)) -> s(X)
 cons(mark(X1),X2) -> cons(X1,X2)
 cons(X1,mark(X2)) -> cons(X1,X2)
 cons(active(X1),X2) -> cons(X1,X2)
 cons(X1,active(X2)) -> cons(X1,X2)
 first(mark(X1),X2) -> first(X1,X2)
 first(X1,mark(X2)) -> first(X1,X2)
 first(active(X1),X2) -> first(X1,X2)
 first(X1,active(X2)) -> first(X1,X2)
 from(mark(X)) -> from(X)
 from(active(X)) -> from(X)
 sel1(mark(X1),X2) -> sel1(X1,X2)
 sel1(X1,mark(X2)) -> sel1(X1,X2)
 sel1(active(X1),X2) -> sel1(X1,X2)
 sel1(X1,active(X2)) -> sel1(X1,X2)
 quote(mark(X)) -> quote(X)
 quote(active(X)) -> quote(X)
 first1(mark(X1),X2) -> first1(X1,X2)
 first1(X1,mark(X2)) -> first1(X1,X2)
 first1(active(X1),X2) -> first1(X1,X2)
 first1(X1,active(X2)) -> first1(X1,X2)
 cons1(mark(X1),X2) -> cons1(X1,X2)
 cons1(X1,mark(X2)) -> cons1(X1,X2)
 cons1(active(X1),X2) -> cons1(X1,X2)
 cons1(X1,active(X2)) -> cons1(X1,X2)
 quote1(mark(X)) -> quote1(X)
 quote1(active(X)) -> quote1(X)
 s1(mark(X)) -> s1(X)
 s1(active(X)) -> s1(X)
 unquote(mark(X)) -> unquote(X)
 unquote(active(X)) -> unquote(X)
 unquote1(mark(X)) -> unquote1(X)
 unquote1(active(X)) -> unquote1(X)
 fcons(mark(X1),X2) -> fcons(X1,X2)
 fcons(X1,mark(X2)) -> fcons(X1,X2)
 fcons(active(X1),X2) -> fcons(X1,X2)
 fcons(X1,active(X2)) -> fcons(X1,X2)

Proof:
 DP Processor:
  DPs:
   active#(sel(s(X),cons(Y,Z))) -> sel#(X,Z)
   active#(sel(s(X),cons(Y,Z))) -> mark#(sel(X,Z))
   active#(sel(0(),cons(X,Z))) -> mark#(X)
   active#(first(0(),Z)) -> mark#(nil())
   active#(first(s(X),cons(Y,Z))) -> first#(X,Z)
   active#(first(s(X),cons(Y,Z))) -> cons#(Y,first(X,Z))
   active#(first(s(X),cons(Y,Z))) -> mark#(cons(Y,first(X,Z)))
   active#(from(X)) -> s#(X)
   active#(from(X)) -> from#(s(X))
   active#(from(X)) -> cons#(X,from(s(X)))
   active#(from(X)) -> mark#(cons(X,from(s(X))))
   active#(sel1(s(X),cons(Y,Z))) -> sel1#(X,Z)
   active#(sel1(s(X),cons(Y,Z))) -> mark#(sel1(X,Z))
   active#(sel1(0(),cons(X,Z))) -> quote#(X)
   active#(sel1(0(),cons(X,Z))) -> mark#(quote(X))
   active#(first1(0(),Z)) -> mark#(nil1())
   active#(first1(s(X),cons(Y,Z))) -> first1#(X,Z)
   active#(first1(s(X),cons(Y,Z))) -> quote#(Y)
   active#(first1(s(X),cons(Y,Z))) -> cons1#(quote(Y),first1(X,Z))
   active#(first1(s(X),cons(Y,Z))) -> mark#(cons1(quote(Y),first1(X,Z)))
   active#(quote(0())) -> mark#(01())
   active#(quote1(cons(X,Z))) -> quote1#(Z)
   active#(quote1(cons(X,Z))) -> quote#(X)
   active#(quote1(cons(X,Z))) -> cons1#(quote(X),quote1(Z))
   active#(quote1(cons(X,Z))) -> mark#(cons1(quote(X),quote1(Z)))
   active#(quote1(nil())) -> mark#(nil1())
   active#(quote(s(X))) -> quote#(X)
   active#(quote(s(X))) -> s1#(quote(X))
   active#(quote(s(X))) -> mark#(s1(quote(X)))
   active#(quote(sel(X,Z))) -> sel1#(X,Z)
   active#(quote(sel(X,Z))) -> mark#(sel1(X,Z))
   active#(quote1(first(X,Z))) -> first1#(X,Z)
   active#(quote1(first(X,Z))) -> mark#(first1(X,Z))
   active#(unquote(01())) -> mark#(0())
   active#(unquote(s1(X))) -> unquote#(X)
   active#(unquote(s1(X))) -> s#(unquote(X))
   active#(unquote(s1(X))) -> mark#(s(unquote(X)))
   active#(unquote1(nil1())) -> mark#(nil())
   active#(unquote1(cons1(X,Z))) -> unquote1#(Z)
   active#(unquote1(cons1(X,Z))) -> unquote#(X)
   active#(unquote1(cons1(X,Z))) -> fcons#(unquote(X),unquote1(Z))
   active#(unquote1(cons1(X,Z))) -> mark#(fcons(unquote(X),unquote1(Z)))
   active#(fcons(X,Z)) -> cons#(X,Z)
   active#(fcons(X,Z)) -> mark#(cons(X,Z))
   mark#(sel(X1,X2)) -> mark#(X2)
   mark#(sel(X1,X2)) -> mark#(X1)
   mark#(sel(X1,X2)) -> sel#(mark(X1),mark(X2))
   mark#(sel(X1,X2)) -> active#(sel(mark(X1),mark(X2)))
   mark#(s(X)) -> mark#(X)
   mark#(s(X)) -> s#(mark(X))
   mark#(s(X)) -> active#(s(mark(X)))
   mark#(cons(X1,X2)) -> mark#(X1)
   mark#(cons(X1,X2)) -> cons#(mark(X1),X2)
   mark#(cons(X1,X2)) -> active#(cons(mark(X1),X2))
   mark#(0()) -> active#(0())
   mark#(first(X1,X2)) -> mark#(X2)
   mark#(first(X1,X2)) -> mark#(X1)
   mark#(first(X1,X2)) -> first#(mark(X1),mark(X2))
   mark#(first(X1,X2)) -> active#(first(mark(X1),mark(X2)))
   mark#(nil()) -> active#(nil())
   mark#(from(X)) -> mark#(X)
   mark#(from(X)) -> from#(mark(X))
   mark#(from(X)) -> active#(from(mark(X)))
   mark#(sel1(X1,X2)) -> mark#(X2)
   mark#(sel1(X1,X2)) -> mark#(X1)
   mark#(sel1(X1,X2)) -> sel1#(mark(X1),mark(X2))
   mark#(sel1(X1,X2)) -> active#(sel1(mark(X1),mark(X2)))
   mark#(quote(X)) -> active#(quote(X))
   mark#(first1(X1,X2)) -> mark#(X2)
   mark#(first1(X1,X2)) -> mark#(X1)
   mark#(first1(X1,X2)) -> first1#(mark(X1),mark(X2))
   mark#(first1(X1,X2)) -> active#(first1(mark(X1),mark(X2)))
   mark#(nil1()) -> active#(nil1())
   mark#(cons1(X1,X2)) -> mark#(X2)
   mark#(cons1(X1,X2)) -> mark#(X1)
   mark#(cons1(X1,X2)) -> cons1#(mark(X1),mark(X2))
   mark#(cons1(X1,X2)) -> active#(cons1(mark(X1),mark(X2)))
   mark#(01()) -> active#(01())
   mark#(quote1(X)) -> active#(quote1(X))
   mark#(s1(X)) -> mark#(X)
   mark#(s1(X)) -> s1#(mark(X))
   mark#(s1(X)) -> active#(s1(mark(X)))
   mark#(unquote(X)) -> mark#(X)
   mark#(unquote(X)) -> unquote#(mark(X))
   mark#(unquote(X)) -> active#(unquote(mark(X)))
   mark#(unquote1(X)) -> mark#(X)
   mark#(unquote1(X)) -> unquote1#(mark(X))
   mark#(unquote1(X)) -> active#(unquote1(mark(X)))
   mark#(fcons(X1,X2)) -> mark#(X2)
   mark#(fcons(X1,X2)) -> mark#(X1)
   mark#(fcons(X1,X2)) -> fcons#(mark(X1),mark(X2))
   mark#(fcons(X1,X2)) -> active#(fcons(mark(X1),mark(X2)))
   sel#(mark(X1),X2) -> sel#(X1,X2)
   sel#(X1,mark(X2)) -> sel#(X1,X2)
   sel#(active(X1),X2) -> sel#(X1,X2)
   sel#(X1,active(X2)) -> sel#(X1,X2)
   s#(mark(X)) -> s#(X)
   s#(active(X)) -> s#(X)
   cons#(mark(X1),X2) -> cons#(X1,X2)
   cons#(X1,mark(X2)) -> cons#(X1,X2)
   cons#(active(X1),X2) -> cons#(X1,X2)
   cons#(X1,active(X2)) -> cons#(X1,X2)
   first#(mark(X1),X2) -> first#(X1,X2)
   first#(X1,mark(X2)) -> first#(X1,X2)
   first#(active(X1),X2) -> first#(X1,X2)
   first#(X1,active(X2)) -> first#(X1,X2)
   from#(mark(X)) -> from#(X)
   from#(active(X)) -> from#(X)
   sel1#(mark(X1),X2) -> sel1#(X1,X2)
   sel1#(X1,mark(X2)) -> sel1#(X1,X2)
   sel1#(active(X1),X2) -> sel1#(X1,X2)
   sel1#(X1,active(X2)) -> sel1#(X1,X2)
   quote#(mark(X)) -> quote#(X)
   quote#(active(X)) -> quote#(X)
   first1#(mark(X1),X2) -> first1#(X1,X2)
   first1#(X1,mark(X2)) -> first1#(X1,X2)
   first1#(active(X1),X2) -> first1#(X1,X2)
   first1#(X1,active(X2)) -> first1#(X1,X2)
   cons1#(mark(X1),X2) -> cons1#(X1,X2)
   cons1#(X1,mark(X2)) -> cons1#(X1,X2)
   cons1#(active(X1),X2) -> cons1#(X1,X2)
   cons1#(X1,active(X2)) -> cons1#(X1,X2)
   quote1#(mark(X)) -> quote1#(X)
   quote1#(active(X)) -> quote1#(X)
   s1#(mark(X)) -> s1#(X)
   s1#(active(X)) -> s1#(X)
   unquote#(mark(X)) -> unquote#(X)
   unquote#(active(X)) -> unquote#(X)
   unquote1#(mark(X)) -> unquote1#(X)
   unquote1#(active(X)) -> unquote1#(X)
   fcons#(mark(X1),X2) -> fcons#(X1,X2)
   fcons#(X1,mark(X2)) -> fcons#(X1,X2)
   fcons#(active(X1),X2) -> fcons#(X1,X2)
   fcons#(X1,active(X2)) -> fcons#(X1,X2)
  TRS:
   active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
   active(sel(0(),cons(X,Z))) -> mark(X)
   active(first(0(),Z)) -> mark(nil())
   active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
   active(from(X)) -> mark(cons(X,from(s(X))))
   active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
   active(sel1(0(),cons(X,Z))) -> mark(quote(X))
   active(first1(0(),Z)) -> mark(nil1())
   active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
   active(quote(0())) -> mark(01())
   active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
   active(quote1(nil())) -> mark(nil1())
   active(quote(s(X))) -> mark(s1(quote(X)))
   active(quote(sel(X,Z))) -> mark(sel1(X,Z))
   active(quote1(first(X,Z))) -> mark(first1(X,Z))
   active(unquote(01())) -> mark(0())
   active(unquote(s1(X))) -> mark(s(unquote(X)))
   active(unquote1(nil1())) -> mark(nil())
   active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
   active(fcons(X,Z)) -> mark(cons(X,Z))
   mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
   mark(s(X)) -> active(s(mark(X)))
   mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
   mark(0()) -> active(0())
   mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
   mark(nil()) -> active(nil())
   mark(from(X)) -> active(from(mark(X)))
   mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
   mark(quote(X)) -> active(quote(X))
   mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
   mark(nil1()) -> active(nil1())
   mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
   mark(01()) -> active(01())
   mark(quote1(X)) -> active(quote1(X))
   mark(s1(X)) -> active(s1(mark(X)))
   mark(unquote(X)) -> active(unquote(mark(X)))
   mark(unquote1(X)) -> active(unquote1(mark(X)))
   mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
   sel(mark(X1),X2) -> sel(X1,X2)
   sel(X1,mark(X2)) -> sel(X1,X2)
   sel(active(X1),X2) -> sel(X1,X2)
   sel(X1,active(X2)) -> sel(X1,X2)
   s(mark(X)) -> s(X)
   s(active(X)) -> s(X)
   cons(mark(X1),X2) -> cons(X1,X2)
   cons(X1,mark(X2)) -> cons(X1,X2)
   cons(active(X1),X2) -> cons(X1,X2)
   cons(X1,active(X2)) -> cons(X1,X2)
   first(mark(X1),X2) -> first(X1,X2)
   first(X1,mark(X2)) -> first(X1,X2)
   first(active(X1),X2) -> first(X1,X2)
   first(X1,active(X2)) -> first(X1,X2)
   from(mark(X)) -> from(X)
   from(active(X)) -> from(X)
   sel1(mark(X1),X2) -> sel1(X1,X2)
   sel1(X1,mark(X2)) -> sel1(X1,X2)
   sel1(active(X1),X2) -> sel1(X1,X2)
   sel1(X1,active(X2)) -> sel1(X1,X2)
   quote(mark(X)) -> quote(X)
   quote(active(X)) -> quote(X)
   first1(mark(X1),X2) -> first1(X1,X2)
   first1(X1,mark(X2)) -> first1(X1,X2)
   first1(active(X1),X2) -> first1(X1,X2)
   first1(X1,active(X2)) -> first1(X1,X2)
   cons1(mark(X1),X2) -> cons1(X1,X2)
   cons1(X1,mark(X2)) -> cons1(X1,X2)
   cons1(active(X1),X2) -> cons1(X1,X2)
   cons1(X1,active(X2)) -> cons1(X1,X2)
   quote1(mark(X)) -> quote1(X)
   quote1(active(X)) -> quote1(X)
   s1(mark(X)) -> s1(X)
   s1(active(X)) -> s1(X)
   unquote(mark(X)) -> unquote(X)
   unquote(active(X)) -> unquote(X)
   unquote1(mark(X)) -> unquote1(X)
   unquote1(active(X)) -> unquote1(X)
   fcons(mark(X1),X2) -> fcons(X1,X2)
   fcons(X1,mark(X2)) -> fcons(X1,X2)
   fcons(active(X1),X2) -> fcons(X1,X2)
   fcons(X1,active(X2)) -> fcons(X1,X2)
  CDG Processor:
   DPs:
    active#(sel(s(X),cons(Y,Z))) -> sel#(X,Z)
    active#(sel(s(X),cons(Y,Z))) -> mark#(sel(X,Z))
    active#(sel(0(),cons(X,Z))) -> mark#(X)
    active#(first(0(),Z)) -> mark#(nil())
    active#(first(s(X),cons(Y,Z))) -> first#(X,Z)
    active#(first(s(X),cons(Y,Z))) -> cons#(Y,first(X,Z))
    active#(first(s(X),cons(Y,Z))) -> mark#(cons(Y,first(X,Z)))
    active#(from(X)) -> s#(X)
    active#(from(X)) -> from#(s(X))
    active#(from(X)) -> cons#(X,from(s(X)))
    active#(from(X)) -> mark#(cons(X,from(s(X))))
    active#(sel1(s(X),cons(Y,Z))) -> sel1#(X,Z)
    active#(sel1(s(X),cons(Y,Z))) -> mark#(sel1(X,Z))
    active#(sel1(0(),cons(X,Z))) -> quote#(X)
    active#(sel1(0(),cons(X,Z))) -> mark#(quote(X))
    active#(first1(0(),Z)) -> mark#(nil1())
    active#(first1(s(X),cons(Y,Z))) -> first1#(X,Z)
    active#(first1(s(X),cons(Y,Z))) -> quote#(Y)
    active#(first1(s(X),cons(Y,Z))) -> cons1#(quote(Y),first1(X,Z))
    active#(first1(s(X),cons(Y,Z))) -> mark#(cons1(quote(Y),first1(X,Z)))
    active#(quote(0())) -> mark#(01())
    active#(quote1(cons(X,Z))) -> quote1#(Z)
    active#(quote1(cons(X,Z))) -> quote#(X)
    active#(quote1(cons(X,Z))) -> cons1#(quote(X),quote1(Z))
    active#(quote1(cons(X,Z))) -> mark#(cons1(quote(X),quote1(Z)))
    active#(quote1(nil())) -> mark#(nil1())
    active#(quote(s(X))) -> quote#(X)
    active#(quote(s(X))) -> s1#(quote(X))
    active#(quote(s(X))) -> mark#(s1(quote(X)))
    active#(quote(sel(X,Z))) -> sel1#(X,Z)
    active#(quote(sel(X,Z))) -> mark#(sel1(X,Z))
    active#(quote1(first(X,Z))) -> first1#(X,Z)
    active#(quote1(first(X,Z))) -> mark#(first1(X,Z))
    active#(unquote(01())) -> mark#(0())
    active#(unquote(s1(X))) -> unquote#(X)
    active#(unquote(s1(X))) -> s#(unquote(X))
    active#(unquote(s1(X))) -> mark#(s(unquote(X)))
    active#(unquote1(nil1())) -> mark#(nil())
    active#(unquote1(cons1(X,Z))) -> unquote1#(Z)
    active#(unquote1(cons1(X,Z))) -> unquote#(X)
    active#(unquote1(cons1(X,Z))) -> fcons#(unquote(X),unquote1(Z))
    active#(unquote1(cons1(X,Z))) -> mark#(fcons(unquote(X),unquote1(Z)))
    active#(fcons(X,Z)) -> cons#(X,Z)
    active#(fcons(X,Z)) -> mark#(cons(X,Z))
    mark#(sel(X1,X2)) -> mark#(X2)
    mark#(sel(X1,X2)) -> mark#(X1)
    mark#(sel(X1,X2)) -> sel#(mark(X1),mark(X2))
    mark#(sel(X1,X2)) -> active#(sel(mark(X1),mark(X2)))
    mark#(s(X)) -> mark#(X)
    mark#(s(X)) -> s#(mark(X))
    mark#(s(X)) -> active#(s(mark(X)))
    mark#(cons(X1,X2)) -> mark#(X1)
    mark#(cons(X1,X2)) -> cons#(mark(X1),X2)
    mark#(cons(X1,X2)) -> active#(cons(mark(X1),X2))
    mark#(0()) -> active#(0())
    mark#(first(X1,X2)) -> mark#(X2)
    mark#(first(X1,X2)) -> mark#(X1)
    mark#(first(X1,X2)) -> first#(mark(X1),mark(X2))
    mark#(first(X1,X2)) -> active#(first(mark(X1),mark(X2)))
    mark#(nil()) -> active#(nil())
    mark#(from(X)) -> mark#(X)
    mark#(from(X)) -> from#(mark(X))
    mark#(from(X)) -> active#(from(mark(X)))
    mark#(sel1(X1,X2)) -> mark#(X2)
    mark#(sel1(X1,X2)) -> mark#(X1)
    mark#(sel1(X1,X2)) -> sel1#(mark(X1),mark(X2))
    mark#(sel1(X1,X2)) -> active#(sel1(mark(X1),mark(X2)))
    mark#(quote(X)) -> active#(quote(X))
    mark#(first1(X1,X2)) -> mark#(X2)
    mark#(first1(X1,X2)) -> mark#(X1)
    mark#(first1(X1,X2)) -> first1#(mark(X1),mark(X2))
    mark#(first1(X1,X2)) -> active#(first1(mark(X1),mark(X2)))
    mark#(nil1()) -> active#(nil1())
    mark#(cons1(X1,X2)) -> mark#(X2)
    mark#(cons1(X1,X2)) -> mark#(X1)
    mark#(cons1(X1,X2)) -> cons1#(mark(X1),mark(X2))
    mark#(cons1(X1,X2)) -> active#(cons1(mark(X1),mark(X2)))
    mark#(01()) -> active#(01())
    mark#(quote1(X)) -> active#(quote1(X))
    mark#(s1(X)) -> mark#(X)
    mark#(s1(X)) -> s1#(mark(X))
    mark#(s1(X)) -> active#(s1(mark(X)))
    mark#(unquote(X)) -> mark#(X)
    mark#(unquote(X)) -> unquote#(mark(X))
    mark#(unquote(X)) -> active#(unquote(mark(X)))
    mark#(unquote1(X)) -> mark#(X)
    mark#(unquote1(X)) -> unquote1#(mark(X))
    mark#(unquote1(X)) -> active#(unquote1(mark(X)))
    mark#(fcons(X1,X2)) -> mark#(X2)
    mark#(fcons(X1,X2)) -> mark#(X1)
    mark#(fcons(X1,X2)) -> fcons#(mark(X1),mark(X2))
    mark#(fcons(X1,X2)) -> active#(fcons(mark(X1),mark(X2)))
    sel#(mark(X1),X2) -> sel#(X1,X2)
    sel#(X1,mark(X2)) -> sel#(X1,X2)
    sel#(active(X1),X2) -> sel#(X1,X2)
    sel#(X1,active(X2)) -> sel#(X1,X2)
    s#(mark(X)) -> s#(X)
    s#(active(X)) -> s#(X)
    cons#(mark(X1),X2) -> cons#(X1,X2)
    cons#(X1,mark(X2)) -> cons#(X1,X2)
    cons#(active(X1),X2) -> cons#(X1,X2)
    cons#(X1,active(X2)) -> cons#(X1,X2)
    first#(mark(X1),X2) -> first#(X1,X2)
    first#(X1,mark(X2)) -> first#(X1,X2)
    first#(active(X1),X2) -> first#(X1,X2)
    first#(X1,active(X2)) -> first#(X1,X2)
    from#(mark(X)) -> from#(X)
    from#(active(X)) -> from#(X)
    sel1#(mark(X1),X2) -> sel1#(X1,X2)
    sel1#(X1,mark(X2)) -> sel1#(X1,X2)
    sel1#(active(X1),X2) -> sel1#(X1,X2)
    sel1#(X1,active(X2)) -> sel1#(X1,X2)
    quote#(mark(X)) -> quote#(X)
    quote#(active(X)) -> quote#(X)
    first1#(mark(X1),X2) -> first1#(X1,X2)
    first1#(X1,mark(X2)) -> first1#(X1,X2)
    first1#(active(X1),X2) -> first1#(X1,X2)
    first1#(X1,active(X2)) -> first1#(X1,X2)
    cons1#(mark(X1),X2) -> cons1#(X1,X2)
    cons1#(X1,mark(X2)) -> cons1#(X1,X2)
    cons1#(active(X1),X2) -> cons1#(X1,X2)
    cons1#(X1,active(X2)) -> cons1#(X1,X2)
    quote1#(mark(X)) -> quote1#(X)
    quote1#(active(X)) -> quote1#(X)
    s1#(mark(X)) -> s1#(X)
    s1#(active(X)) -> s1#(X)
    unquote#(mark(X)) -> unquote#(X)
    unquote#(active(X)) -> unquote#(X)
    unquote1#(mark(X)) -> unquote1#(X)
    unquote1#(active(X)) -> unquote1#(X)
    fcons#(mark(X1),X2) -> fcons#(X1,X2)
    fcons#(X1,mark(X2)) -> fcons#(X1,X2)
    fcons#(active(X1),X2) -> fcons#(X1,X2)
    fcons#(X1,active(X2)) -> fcons#(X1,X2)
   TRS:
    active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
    active(sel(0(),cons(X,Z))) -> mark(X)
    active(first(0(),Z)) -> mark(nil())
    active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
    active(from(X)) -> mark(cons(X,from(s(X))))
    active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
    active(sel1(0(),cons(X,Z))) -> mark(quote(X))
    active(first1(0(),Z)) -> mark(nil1())
    active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
    active(quote(0())) -> mark(01())
    active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
    active(quote1(nil())) -> mark(nil1())
    active(quote(s(X))) -> mark(s1(quote(X)))
    active(quote(sel(X,Z))) -> mark(sel1(X,Z))
    active(quote1(first(X,Z))) -> mark(first1(X,Z))
    active(unquote(01())) -> mark(0())
    active(unquote(s1(X))) -> mark(s(unquote(X)))
    active(unquote1(nil1())) -> mark(nil())
    active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
    active(fcons(X,Z)) -> mark(cons(X,Z))
    mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
    mark(s(X)) -> active(s(mark(X)))
    mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
    mark(0()) -> active(0())
    mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
    mark(nil()) -> active(nil())
    mark(from(X)) -> active(from(mark(X)))
    mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
    mark(quote(X)) -> active(quote(X))
    mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
    mark(nil1()) -> active(nil1())
    mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
    mark(01()) -> active(01())
    mark(quote1(X)) -> active(quote1(X))
    mark(s1(X)) -> active(s1(mark(X)))
    mark(unquote(X)) -> active(unquote(mark(X)))
    mark(unquote1(X)) -> active(unquote1(mark(X)))
    mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
    sel(mark(X1),X2) -> sel(X1,X2)
    sel(X1,mark(X2)) -> sel(X1,X2)
    sel(active(X1),X2) -> sel(X1,X2)
    sel(X1,active(X2)) -> sel(X1,X2)
    s(mark(X)) -> s(X)
    s(active(X)) -> s(X)
    cons(mark(X1),X2) -> cons(X1,X2)
    cons(X1,mark(X2)) -> cons(X1,X2)
    cons(active(X1),X2) -> cons(X1,X2)
    cons(X1,active(X2)) -> cons(X1,X2)
    first(mark(X1),X2) -> first(X1,X2)
    first(X1,mark(X2)) -> first(X1,X2)
    first(active(X1),X2) -> first(X1,X2)
    first(X1,active(X2)) -> first(X1,X2)
    from(mark(X)) -> from(X)
    from(active(X)) -> from(X)
    sel1(mark(X1),X2) -> sel1(X1,X2)
    sel1(X1,mark(X2)) -> sel1(X1,X2)
    sel1(active(X1),X2) -> sel1(X1,X2)
    sel1(X1,active(X2)) -> sel1(X1,X2)
    quote(mark(X)) -> quote(X)
    quote(active(X)) -> quote(X)
    first1(mark(X1),X2) -> first1(X1,X2)
    first1(X1,mark(X2)) -> first1(X1,X2)
    first1(active(X1),X2) -> first1(X1,X2)
    first1(X1,active(X2)) -> first1(X1,X2)
    cons1(mark(X1),X2) -> cons1(X1,X2)
    cons1(X1,mark(X2)) -> cons1(X1,X2)
    cons1(active(X1),X2) -> cons1(X1,X2)
    cons1(X1,active(X2)) -> cons1(X1,X2)
    quote1(mark(X)) -> quote1(X)
    quote1(active(X)) -> quote1(X)
    s1(mark(X)) -> s1(X)
    s1(active(X)) -> s1(X)
    unquote(mark(X)) -> unquote(X)
    unquote(active(X)) -> unquote(X)
    unquote1(mark(X)) -> unquote1(X)
    unquote1(active(X)) -> unquote1(X)
    fcons(mark(X1),X2) -> fcons(X1,X2)
    fcons(X1,mark(X2)) -> fcons(X1,X2)
    fcons(active(X1),X2) -> fcons(X1,X2)
    fcons(X1,active(X2)) -> fcons(X1,X2)
   graph:
    ...
   SCC Processor:
    #sccs: 15
    #rules: 84
    #arcs: 1234/17956
    DPs:
     mark#(fcons(X1,X2)) -> mark#(X2)
     mark#(fcons(X1,X2)) -> active#(fcons(mark(X1),mark(X2)))
     active#(fcons(X,Z)) -> mark#(cons(X,Z))
     mark#(cons(X1,X2)) -> mark#(X1)
     mark#(fcons(X1,X2)) -> mark#(X1)
     mark#(unquote1(X)) -> active#(unquote1(mark(X)))
     active#(unquote1(cons1(X,Z))) -> mark#(fcons(unquote(X),unquote1(Z)))
     mark#(unquote1(X)) -> mark#(X)
     mark#(unquote(X)) -> active#(unquote(mark(X)))
     active#(unquote(s1(X))) -> mark#(s(unquote(X)))
     mark#(s(X)) -> mark#(X)
     mark#(unquote(X)) -> mark#(X)
     mark#(s1(X)) -> mark#(X)
     mark#(quote1(X)) -> active#(quote1(X))
     active#(quote1(first(X,Z))) -> mark#(first1(X,Z))
     mark#(first1(X1,X2)) -> active#(first1(mark(X1),mark(X2)))
     active#(first1(s(X),cons(Y,Z))) -> mark#(cons1(quote(Y),first1(X,Z)))
     mark#(cons1(X1,X2)) -> mark#(X1)
     mark#(cons1(X1,X2)) -> mark#(X2)
     mark#(first1(X1,X2)) -> mark#(X1)
     mark#(first1(X1,X2)) -> mark#(X2)
     mark#(quote(X)) -> active#(quote(X))
     active#(quote(sel(X,Z))) -> mark#(sel1(X,Z))
     mark#(sel1(X1,X2)) -> active#(sel1(mark(X1),mark(X2)))
     active#(sel1(0(),cons(X,Z))) -> mark#(quote(X))
     active#(sel1(s(X),cons(Y,Z))) -> mark#(sel1(X,Z))
     mark#(sel1(X1,X2)) -> mark#(X1)
     mark#(sel1(X1,X2)) -> mark#(X2)
     mark#(from(X)) -> active#(from(mark(X)))
     active#(from(X)) -> mark#(cons(X,from(s(X))))
     mark#(from(X)) -> mark#(X)
     mark#(first(X1,X2)) -> active#(first(mark(X1),mark(X2)))
     active#(first(s(X),cons(Y,Z))) -> mark#(cons(Y,first(X,Z)))
     mark#(first(X1,X2)) -> mark#(X1)
     mark#(first(X1,X2)) -> mark#(X2)
     mark#(sel(X1,X2)) -> active#(sel(mark(X1),mark(X2)))
     active#(sel(0(),cons(X,Z))) -> mark#(X)
     mark#(sel(X1,X2)) -> mark#(X1)
     mark#(sel(X1,X2)) -> mark#(X2)
     active#(sel(s(X),cons(Y,Z))) -> mark#(sel(X,Z))
     active#(quote(s(X))) -> mark#(s1(quote(X)))
     active#(quote1(cons(X,Z))) -> mark#(cons1(quote(X),quote1(Z)))
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     sel#(X1,active(X2)) -> sel#(X1,X2)
     sel#(active(X1),X2) -> sel#(X1,X2)
     sel#(X1,mark(X2)) -> sel#(X1,X2)
     sel#(mark(X1),X2) -> sel#(X1,X2)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     first#(mark(X1),X2) -> first#(X1,X2)
     first#(X1,active(X2)) -> first#(X1,X2)
     first#(active(X1),X2) -> first#(X1,X2)
     first#(X1,mark(X2)) -> first#(X1,X2)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     cons#(mark(X1),X2) -> cons#(X1,X2)
     cons#(X1,active(X2)) -> cons#(X1,X2)
     cons#(active(X1),X2) -> cons#(X1,X2)
     cons#(X1,mark(X2)) -> cons#(X1,X2)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     s#(mark(X)) -> s#(X)
     s#(active(X)) -> s#(X)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     from#(mark(X)) -> from#(X)
     from#(active(X)) -> from#(X)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     sel1#(mark(X1),X2) -> sel1#(X1,X2)
     sel1#(X1,active(X2)) -> sel1#(X1,X2)
     sel1#(active(X1),X2) -> sel1#(X1,X2)
     sel1#(X1,mark(X2)) -> sel1#(X1,X2)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     quote#(mark(X)) -> quote#(X)
     quote#(active(X)) -> quote#(X)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     first1#(mark(X1),X2) -> first1#(X1,X2)
     first1#(X1,active(X2)) -> first1#(X1,X2)
     first1#(active(X1),X2) -> first1#(X1,X2)
     first1#(X1,mark(X2)) -> first1#(X1,X2)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     cons1#(mark(X1),X2) -> cons1#(X1,X2)
     cons1#(X1,active(X2)) -> cons1#(X1,X2)
     cons1#(active(X1),X2) -> cons1#(X1,X2)
     cons1#(X1,mark(X2)) -> cons1#(X1,X2)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     quote1#(mark(X)) -> quote1#(X)
     quote1#(active(X)) -> quote1#(X)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     s1#(mark(X)) -> s1#(X)
     s1#(active(X)) -> s1#(X)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     unquote#(mark(X)) -> unquote#(X)
     unquote#(active(X)) -> unquote#(X)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     unquote1#(mark(X)) -> unquote1#(X)
     unquote1#(active(X)) -> unquote1#(X)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open
    
    DPs:
     fcons#(mark(X1),X2) -> fcons#(X1,X2)
     fcons#(X1,active(X2)) -> fcons#(X1,X2)
     fcons#(active(X1),X2) -> fcons#(X1,X2)
     fcons#(X1,mark(X2)) -> fcons#(X1,X2)
    TRS:
     active(sel(s(X),cons(Y,Z))) -> mark(sel(X,Z))
     active(sel(0(),cons(X,Z))) -> mark(X)
     active(first(0(),Z)) -> mark(nil())
     active(first(s(X),cons(Y,Z))) -> mark(cons(Y,first(X,Z)))
     active(from(X)) -> mark(cons(X,from(s(X))))
     active(sel1(s(X),cons(Y,Z))) -> mark(sel1(X,Z))
     active(sel1(0(),cons(X,Z))) -> mark(quote(X))
     active(first1(0(),Z)) -> mark(nil1())
     active(first1(s(X),cons(Y,Z))) -> mark(cons1(quote(Y),first1(X,Z)))
     active(quote(0())) -> mark(01())
     active(quote1(cons(X,Z))) -> mark(cons1(quote(X),quote1(Z)))
     active(quote1(nil())) -> mark(nil1())
     active(quote(s(X))) -> mark(s1(quote(X)))
     active(quote(sel(X,Z))) -> mark(sel1(X,Z))
     active(quote1(first(X,Z))) -> mark(first1(X,Z))
     active(unquote(01())) -> mark(0())
     active(unquote(s1(X))) -> mark(s(unquote(X)))
     active(unquote1(nil1())) -> mark(nil())
     active(unquote1(cons1(X,Z))) -> mark(fcons(unquote(X),unquote1(Z)))
     active(fcons(X,Z)) -> mark(cons(X,Z))
     mark(sel(X1,X2)) -> active(sel(mark(X1),mark(X2)))
     mark(s(X)) -> active(s(mark(X)))
     mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
     mark(0()) -> active(0())
     mark(first(X1,X2)) -> active(first(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(from(X)) -> active(from(mark(X)))
     mark(sel1(X1,X2)) -> active(sel1(mark(X1),mark(X2)))
     mark(quote(X)) -> active(quote(X))
     mark(first1(X1,X2)) -> active(first1(mark(X1),mark(X2)))
     mark(nil1()) -> active(nil1())
     mark(cons1(X1,X2)) -> active(cons1(mark(X1),mark(X2)))
     mark(01()) -> active(01())
     mark(quote1(X)) -> active(quote1(X))
     mark(s1(X)) -> active(s1(mark(X)))
     mark(unquote(X)) -> active(unquote(mark(X)))
     mark(unquote1(X)) -> active(unquote1(mark(X)))
     mark(fcons(X1,X2)) -> active(fcons(mark(X1),mark(X2)))
     sel(mark(X1),X2) -> sel(X1,X2)
     sel(X1,mark(X2)) -> sel(X1,X2)
     sel(active(X1),X2) -> sel(X1,X2)
     sel(X1,active(X2)) -> sel(X1,X2)
     s(mark(X)) -> s(X)
     s(active(X)) -> s(X)
     cons(mark(X1),X2) -> cons(X1,X2)
     cons(X1,mark(X2)) -> cons(X1,X2)
     cons(active(X1),X2) -> cons(X1,X2)
     cons(X1,active(X2)) -> cons(X1,X2)
     first(mark(X1),X2) -> first(X1,X2)
     first(X1,mark(X2)) -> first(X1,X2)
     first(active(X1),X2) -> first(X1,X2)
     first(X1,active(X2)) -> first(X1,X2)
     from(mark(X)) -> from(X)
     from(active(X)) -> from(X)
     sel1(mark(X1),X2) -> sel1(X1,X2)
     sel1(X1,mark(X2)) -> sel1(X1,X2)
     sel1(active(X1),X2) -> sel1(X1,X2)
     sel1(X1,active(X2)) -> sel1(X1,X2)
     quote(mark(X)) -> quote(X)
     quote(active(X)) -> quote(X)
     first1(mark(X1),X2) -> first1(X1,X2)
     first1(X1,mark(X2)) -> first1(X1,X2)
     first1(active(X1),X2) -> first1(X1,X2)
     first1(X1,active(X2)) -> first1(X1,X2)
     cons1(mark(X1),X2) -> cons1(X1,X2)
     cons1(X1,mark(X2)) -> cons1(X1,X2)
     cons1(active(X1),X2) -> cons1(X1,X2)
     cons1(X1,active(X2)) -> cons1(X1,X2)
     quote1(mark(X)) -> quote1(X)
     quote1(active(X)) -> quote1(X)
     s1(mark(X)) -> s1(X)
     s1(active(X)) -> s1(X)
     unquote(mark(X)) -> unquote(X)
     unquote(active(X)) -> unquote(X)
     unquote1(mark(X)) -> unquote1(X)
     unquote1(active(X)) -> unquote1(X)
     fcons(mark(X1),X2) -> fcons(X1,X2)
     fcons(X1,mark(X2)) -> fcons(X1,X2)
     fcons(active(X1),X2) -> fcons(X1,X2)
     fcons(X1,active(X2)) -> fcons(X1,X2)
    Open