197.01/50.39	MAYBE
197.01/50.39	
197.01/50.39	Problem:
197.01/50.39	 a(x1) -> b(x1)
197.01/50.39	 a(a(b(c(x1)))) -> a(c(c(a(a(a(x1))))))
197.01/50.39	
197.01/50.39	Proof:
197.01/50.39	 Open
197.01/50.39	EOF