195.77/50.03	MAYBE
195.77/50.03	
195.77/50.03	Problem:
195.77/50.03	 a(x1) -> x1
195.77/50.03	 a(a(a(x1))) -> b(x1)
195.77/50.03	 b(c(x1)) -> c(c(a(b(x1))))
195.77/50.03	 c(x1) -> x1
195.77/50.03	
195.77/50.03	Proof:
195.77/50.03	 Open
195.77/50.03	EOF