MAYBE
31.53/10.34	MAYBE
31.53/10.34	
31.53/10.34	Problem:
31.53/10.34	 a(x1) -> x1
31.53/10.34	 a(b(x1)) -> b(b(a(c(a(x1)))))
31.53/10.34	 b(x1) -> x1
31.53/10.34	 c(a(c(x1))) -> x1
31.53/10.34	
31.53/10.34	Proof:
31.53/10.34	 Open
31.53/10.35	EOF