MAYBE
30.71/10.33	MAYBE
30.71/10.33	
30.71/10.33	Problem:
30.71/10.33	 a(b(x1)) -> b(b(b(x1)))
30.71/10.33	 b(a(x1)) -> a(a(a(x1)))
30.71/10.33	 a(x1) -> x1
30.71/10.33	 b(x1) -> x1
30.71/10.33	
30.71/10.33	Proof:
30.71/10.33	 Open
30.71/10.33	EOF