MAYBE
23.92/10.18	MAYBE
23.92/10.18	
23.92/10.18	Problem:
23.92/10.18	 f(x,f(y,a())) -> f(f(f(f(a(),x),y),a()),h(a()))
23.92/10.18	
23.92/10.18	Proof:
23.92/10.18	 Open
23.92/10.18	EOF