198.10/50.49	MAYBE
198.10/50.49	
198.10/50.49	Problem:
198.10/50.49	 a(a(x1)) -> b(c(x1))
198.10/50.49	 b(b(x1)) -> a(c(c(c(x1))))
198.10/50.49	 c(c(x1)) -> a(b(x1))
198.10/50.49	
198.10/50.49	Proof:
198.10/50.49	 Open
198.10/50.49	EOF