MAYBE
163.06/55.32	MAYBE
163.06/55.32	
163.06/55.32	Problem:
163.06/55.32	 a(a(a(x1))) -> a(b(x1))
163.06/55.32	 b(c(x1)) -> c(c(a(a(a(x1)))))
163.06/55.32	
163.06/55.32	Proof:
163.06/55.32	 Open
163.06/55.32	EOF