MAYBE
39.54/10.37	MAYBE
39.54/10.37	
39.54/10.37	Problem:
39.54/10.37	 a(x1) -> x1
39.54/10.37	 a(a(a(b(x1)))) -> b(b(b(a(a(a(a(x1)))))))
39.54/10.37	
39.54/10.37	Proof:
39.54/10.37	 Open
39.54/10.37	EOF