195.95/50.14	MAYBE
195.95/50.14	
195.95/50.14	Problem:
195.95/50.14	 a(a(x1)) -> b(b(c(x1)))
195.95/50.14	 a(c(x1)) -> x1
195.95/50.14	 c(b(x1)) -> a(c(a(x1)))
195.95/50.14	
195.95/50.14	Proof:
195.95/50.14	 Open
195.95/50.14	EOF