MAYBE
0.08/0.19	MAYBE
0.08/0.19	
0.08/0.19	Problem:
0.08/0.19	 a__from(X) -> cons(mark(X),from(s(X)))
0.08/0.19	 a__head(cons(X,XS)) -> mark(X)
0.08/0.19	 a__2nd(cons(X,XS)) -> a__head(mark(XS))
0.08/0.19	 a__take(0(),XS) -> nil()
0.08/0.19	 a__take(s(N),cons(X,XS)) -> cons(mark(X),take(N,XS))
0.08/0.19	 a__sel(0(),cons(X,XS)) -> mark(X)
0.08/0.19	 a__sel(s(N),cons(X,XS)) -> a__sel(mark(N),mark(XS))
0.08/0.19	 mark(from(X)) -> a__from(mark(X))
0.08/0.19	 mark(head(X)) -> a__head(mark(X))
0.08/0.19	 mark(2nd(X)) -> a__2nd(mark(X))
0.08/0.19	 mark(take(X1,X2)) -> a__take(mark(X1),mark(X2))
0.08/0.19	 mark(sel(X1,X2)) -> a__sel(mark(X1),mark(X2))
0.08/0.19	 mark(cons(X1,X2)) -> cons(mark(X1),X2)
0.08/0.19	 mark(s(X)) -> s(mark(X))
0.08/0.19	 mark(0()) -> 0()
0.08/0.19	 mark(nil()) -> nil()
0.08/0.19	 a__from(X) -> from(X)
0.08/0.19	 a__head(X) -> head(X)
0.08/0.19	 a__2nd(X) -> 2nd(X)
0.08/0.19	 a__take(X1,X2) -> take(X1,X2)
0.08/0.19	 a__sel(X1,X2) -> sel(X1,X2)
0.08/0.19	
0.08/0.19	Proof:
0.08/0.19	 Open
0.08/0.19	EOF