195.77/50.03	MAYBE
195.77/50.03	
195.77/50.03	Problem:
195.77/50.03	 a(x1) -> b(x1)
195.77/50.03	 b(a(a(b(x1)))) -> a(a(b(b(a(x1)))))
195.77/50.03	
195.77/50.03	Proof:
195.77/50.03	 Open
195.77/50.04	EOF