197.95/50.46	MAYBE
197.95/50.46	
197.95/50.46	Problem:
197.95/50.46	 a(l(x1)) -> l(a(x1))
197.95/50.46	 a(c(x1)) -> c(a(x1))
197.95/50.46	 c(a(r(x1))) -> r(a(x1))
197.95/50.46	 l(r(a(a(x1)))) -> a(a(l(c(c(c(r(x1)))))))
197.95/50.46	
197.95/50.46	Proof:
197.95/50.46	 Open
197.95/50.46	EOF