MAYBE
39.26/10.33	MAYBE
39.26/10.33	
39.26/10.33	Problem:
39.26/10.33	 a(b(x1)) -> x1
39.26/10.33	 a(b(x1)) -> b(c(x1))
39.26/10.33	 a(c(x1)) -> c(b(a(a(x1))))
39.26/10.33	
39.26/10.33	Proof:
39.26/10.33	 Open
39.26/10.33	EOF