MAYBE
36.65/10.37	MAYBE
36.65/10.37	
36.65/10.37	Problem:
36.65/10.37	 a(x1) -> b(c(x1))
36.65/10.37	 a(b(b(x1))) -> b(b(a(a(x1))))
36.65/10.37	 c(b(x1)) -> x1
36.65/10.37	
36.65/10.37	Proof:
36.65/10.37	 Open
36.65/10.38	EOF