public void print(){
		for (String index : cache.keySet()) {
			for(String tag : cache.get(index).records.keySet()){
				for(String offset: cache.get(index).records.get(tag).words.keySet()){
					System.out.print(" " + index + " " + tag + " " + offset + " " + cache.get(index).records.get(tag).words.get(offset));
				}
				
			}
			System.out.println(" ");
		}
	}