MAYBE
40.00/10.38	MAYBE
40.00/10.38	
40.00/10.38	Problem:
40.00/10.38	 a(x1) -> x1
40.00/10.38	 a(a(b(x1))) -> b(c(a(a(a(x1)))))
40.00/10.38	 c(a(x1)) -> b(x1)
40.00/10.38	
40.00/10.38	Proof:
40.00/10.38	 Open
40.00/10.38	EOF