MAYBE
34.24/10.19	MAYBE
34.24/10.19	
34.24/10.19	Problem:
34.24/10.19	 f(y,f(x,f(a(),x))) -> f(f(f(a(),x),f(x,a())),f(a(),y))
34.24/10.19	 f(x,f(x,y)) -> f(f(f(x,a()),a()),a())
34.24/10.19	
34.24/10.19	Proof:
34.24/10.19	 Open
34.24/10.19	EOF