MAYBE
0.08/0.18	MAYBE
0.08/0.18	
0.08/0.18	Problem:
0.08/0.18	 f(x,y,z) -> g(<=(x,y),x,y,z)
0.08/0.18	 g(true(),x,y,z) -> z
0.08/0.18	 g(false(),x,y,z) -> f(f(p(x),y,z),f(p(y),z,x),f(p(z),x,y))
0.08/0.18	 p(0()) -> 0()
0.08/0.18	 p(s(x)) -> x
0.08/0.18	
0.08/0.18	Proof:
0.08/0.18	 Open
0.08/0.18	EOF