196.78/50.16	MAYBE
196.78/50.16	
196.78/50.16	Problem:
196.78/50.16	 a(x1) -> b(b(c(x1)))
196.78/50.16	 a(b(x1)) -> x1
196.78/50.16	 c(c(b(x1))) -> a(a(c(x1)))
196.78/50.16	
196.78/50.16	Proof:
196.78/50.16	 Open
196.78/50.16	EOF