MAYBE
0.07/0.19	MAYBE
0.18/0.20	
0.18/0.20	Problem:
0.18/0.20	 sel(s(X),cons(Y,Z)) -> sel(X,activate(Z))
0.18/0.20	 sel(0(),cons(X,Z)) -> X
0.18/0.20	 first(0(),Z) -> nil()
0.18/0.20	 first(s(X),cons(Y,Z)) -> cons(Y,n__first(X,activate(Z)))
0.18/0.20	 from(X) -> cons(X,n__from(n__s(X)))
0.18/0.20	 sel1(s(X),cons(Y,Z)) -> sel1(X,activate(Z))
0.18/0.20	 sel1(0(),cons(X,Z)) -> quote(X)
0.18/0.20	 first1(0(),Z) -> nil1()
0.18/0.20	 first1(s(X),cons(Y,Z)) -> cons1(quote(Y),first1(X,activate(Z)))
0.18/0.20	 quote(n__0()) -> 01()
0.18/0.20	 quote1(n__cons(X,Z)) -> cons1(quote(activate(X)),quote1(activate(Z)))
0.18/0.20	 quote1(n__nil()) -> nil1()
0.18/0.20	 quote(n__s(X)) -> s1(quote(activate(X)))
0.18/0.20	 quote(n__sel(X,Z)) -> sel1(activate(X),activate(Z))
0.18/0.20	 quote1(n__first(X,Z)) -> first1(activate(X),activate(Z))
0.18/0.20	 unquote(01()) -> 0()
0.18/0.20	 unquote(s1(X)) -> s(unquote(X))
0.18/0.20	 unquote1(nil1()) -> nil()
0.18/0.20	 unquote1(cons1(X,Z)) -> fcons(unquote(X),unquote1(Z))
0.18/0.20	 fcons(X,Z) -> cons(X,Z)
0.18/0.20	 first(X1,X2) -> n__first(X1,X2)
0.18/0.20	 from(X) -> n__from(X)
0.18/0.20	 s(X) -> n__s(X)
0.18/0.20	 0() -> n__0()
0.18/0.20	 cons(X1,X2) -> n__cons(X1,X2)
0.18/0.20	 nil() -> n__nil()
0.18/0.20	 sel(X1,X2) -> n__sel(X1,X2)
0.18/0.20	 activate(n__first(X1,X2)) -> first(activate(X1),activate(X2))
0.18/0.20	 activate(n__from(X)) -> from(activate(X))
0.18/0.20	 activate(n__s(X)) -> s(activate(X))
0.18/0.20	 activate(n__0()) -> 0()
0.18/0.20	 activate(n__cons(X1,X2)) -> cons(activate(X1),X2)
0.18/0.20	 activate(n__nil()) -> nil()
0.18/0.20	 activate(n__sel(X1,X2)) -> sel(activate(X1),activate(X2))
0.18/0.20	 activate(X) -> X
0.18/0.20	
0.18/0.20	Proof:
0.18/0.20	 Open
0.18/0.20	EOF