MAYBE
226.92/57.89	MAYBE
226.92/57.89	
226.92/57.89	Problem:
226.92/57.89	 a(l(x1)) -> l(a(x1))
226.92/57.89	 a(c(x1)) -> c(a(x1))
226.92/57.89	 c(a(r(x1))) -> r(a(x1))
226.92/57.89	 l(r(a(x1))) -> a(l(c(c(r(x1)))))
226.92/57.89	
226.92/57.89	Proof:
226.92/57.89	 Open
226.92/57.89	EOF