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