MAYBE
0.08/0.19	MAYBE
0.08/0.19	
0.08/0.19	Problem:
0.08/0.19	 active(f(X,g(X),Y)) -> mark(f(Y,Y,Y))
0.08/0.19	 active(g(b())) -> mark(c())
0.08/0.19	 active(b()) -> mark(c())
0.08/0.19	 active(g(X)) -> g(active(X))
0.08/0.19	 g(mark(X)) -> mark(g(X))
0.08/0.19	 proper(f(X1,X2,X3)) -> f(proper(X1),proper(X2),proper(X3))
0.08/0.19	 proper(g(X)) -> g(proper(X))
0.08/0.19	 proper(b()) -> ok(b())
0.08/0.19	 proper(c()) -> ok(c())
0.08/0.19	 f(ok(X1),ok(X2),ok(X3)) -> ok(f(X1,X2,X3))
0.08/0.19	 g(ok(X)) -> ok(g(X))
0.08/0.19	 top(mark(X)) -> top(proper(X))
0.08/0.19	 top(ok(X)) -> top(active(X))
0.08/0.19	
0.08/0.19	Proof:
0.08/0.19	 Open
0.08/0.19	EOF