MAYBE
34.46/10.35	MAYBE
34.46/10.35	
34.46/10.35	Problem:
34.46/10.35	 a(x1) -> x1
34.46/10.35	 a(b(x1)) -> b(b(a(c(x1))))
34.46/10.35	 b(x1) -> x1
34.46/10.35	 c(c(x1)) -> b(a(x1))
34.46/10.35	
34.46/10.35	Proof:
34.46/10.35	 Open
34.46/10.36	EOF