195.30/49.91	MAYBE
195.30/49.91	
195.30/49.91	Problem:
195.30/49.91	 a(x1) -> x1
195.30/49.91	 a(a(x1)) -> b(c(x1))
195.30/49.91	 b(x1) -> x1
195.30/49.91	 c(x1) -> x1
195.30/49.91	 c(b(x1)) -> b(a(c(x1)))
195.30/49.91	
195.30/49.91	Proof:
195.30/49.91	 Open
195.30/49.92	EOF