MAYBE
33.63/10.18	MAYBE
33.63/10.18	
33.63/10.18	Problem:
33.63/10.18	 a(x1) -> x1
33.63/10.18	 a(a(x1)) -> b(b(c(x1)))
33.63/10.18	 b(x1) -> x1
33.63/10.18	 c(b(x1)) -> b(a(c(x1)))
33.63/10.18	
33.63/10.18	Proof:
33.63/10.18	 Open
33.63/10.18	EOF