MAYBE
0.09/0.17	MAYBE
0.09/0.17	
0.09/0.17	Problem:
0.09/0.17	 first(0(),X) -> nil()
0.09/0.17	 first(s(X),cons(Y,Z)) -> cons(Y,n__first(X,activate(Z)))
0.09/0.17	 from(X) -> cons(X,n__from(s(X)))
0.09/0.17	 first(X1,X2) -> n__first(X1,X2)
0.09/0.17	 from(X) -> n__from(X)
0.09/0.17	 activate(n__first(X1,X2)) -> first(X1,X2)
0.09/0.17	 activate(n__from(X)) -> from(X)
0.09/0.17	 activate(X) -> X
0.09/0.17	
0.09/0.17	Proof:
0.09/0.17	 Open
0.09/0.17	EOF