MAYBE
172.49/55.35	MAYBE
172.49/55.35	
172.49/55.35	Problem:
172.49/55.35	 a(a(b(x1))) -> a(b(c(a(a(x1)))))
172.49/55.35	 a(c(x1)) -> b(a(x1))
172.49/55.35	
172.49/55.35	Proof:
172.49/55.35	 Open
172.49/55.36	EOF