MAYBE
39.79/10.31	MAYBE
39.79/10.32	
39.79/10.32	Problem:
39.79/10.32	 a(a(x1)) -> a(b(b(c(x1))))
39.79/10.32	 b(c(x1)) -> x1
39.79/10.32	 c(b(x1)) -> a(c(x1))
39.79/10.32	
39.79/10.32	Proof:
39.79/10.32	 Open
39.79/10.32	EOF