MAYBE
197.64/55.37	MAYBE
197.64/55.37	
197.64/55.37	Problem:
197.64/55.37	 f(x,a(b(y))) -> f(a(b(x)),y)
197.64/55.37	 f(a(x),y) -> f(x,a(y))
197.64/55.37	 f(b(x),y) -> f(x,b(y))
197.64/55.37	
197.64/55.37	Proof:
197.64/55.37	 Open
197.64/55.37	EOF