MAYBE
0.08/0.18	MAYBE
0.08/0.18	
0.08/0.18	Problem:
0.08/0.18	 times(x,0()) -> 0()
0.08/0.18	 times(x,s(y)) -> plus(times(x,y),x)
0.08/0.18	 plus(x,0()) -> x
0.08/0.18	 plus(0(),x) -> x
0.08/0.18	 plus(x,s(y)) -> s(plus(x,y))
0.08/0.18	 plus(s(x),y) -> s(plus(x,y))
0.08/0.18	
0.08/0.18	Proof:
0.08/0.18	 Open
0.08/0.18	EOF