public void makeRoom(String w) {
    	if (w.compareTo(left.peek()) < 0){
    		while (w.compareTo(left.peek()) < 0){
    			left.pop();
    		}
    		left.push(w);
    	}
    	if (w.compareTo(left.peek()) > 0 && w.compareTo(right.peek()) > 0){
    		while (w.compareTo(right.peek()) > 0){
    			right.pop();
    		}
    		right.push(w);
    	}
    	if (w.compareTo(left.peek()) > 0 && w.compareTo(right.peek()) < 0){
    		left.push(w);
    	}
    	}