MAYBE
39.70/10.37	MAYBE
39.70/10.37	
39.70/10.37	Problem:
39.70/10.37	 a(x1) -> b(b(c(x1)))
39.70/10.37	 a(c(b(x1))) -> c(a(a(x1)))
39.70/10.37	 c(b(x1)) -> x1
39.70/10.37	
39.70/10.37	Proof:
39.70/10.37	 Open
39.70/10.37	EOF