MAYBE
31.72/10.29	MAYBE
31.72/10.29	
31.72/10.29	Problem:
31.72/10.29	 a(x1) -> x1
31.72/10.29	 a(a(b(x1))) -> c(c(c(x1)))
31.72/10.29	 c(x1) -> b(a(x1))
31.72/10.29	 c(b(x1)) -> x1
31.72/10.29	
31.72/10.29	Proof:
31.72/10.29	 Open
31.99/10.30	EOF