MAYBE
236.58/60.27	MAYBE
236.58/60.27	
236.58/60.27	Problem:
236.58/60.27	 f(x,f(s(s(y)),f(z,w))) -> f(s(x),f(y,f(s(z),w)))
236.58/60.27	 L(f(s(s(y)),f(z,w))) -> L(f(s(0()),f(y,f(s(z),w))))
236.58/60.27	 f(x,f(s(s(y)),nil())) -> f(s(x),f(y,f(s(0()),nil())))
236.58/60.27	
236.58/60.27	Proof:
236.58/60.27	 Open
236.58/60.27	EOF