MAYBE
132.78/55.33	MAYBE
132.78/55.33	
132.78/55.33	Problem:
132.78/55.33	 a(x1) -> b(x1)
132.78/55.33	 b(b(c(x1))) -> c(a(c(a(b(x1)))))
132.78/55.33	 c(c(x1)) -> x1
132.78/55.33	
132.78/55.33	Proof:
132.78/55.33	 Open
132.78/55.33	EOF