MAYBE
83.66/55.35	MAYBE
83.66/55.35	
83.66/55.35	Problem:
83.66/55.35	 a(x1) -> x1
83.66/55.35	 a(b(x1)) -> c(a(x1))
83.66/55.35	 c(c(x1)) -> c(b(c(b(a(x1)))))
83.66/55.35	
83.66/55.35	Proof:
83.66/55.35	 Open
83.66/55.35	EOF