MAYBE
0.07/0.17	MAYBE
0.07/0.17	
0.07/0.17	Problem:
0.07/0.17	 f(0(),y) -> 0()
0.07/0.17	 f(s(x),y) -> f(f(x,y),y)
0.07/0.17	
0.07/0.17	Proof:
0.07/0.17	 Open
0.07/0.18	EOF