docs: private void getWords(String[] words) {
  		words[id] = word;
  		for (int i = 0; i < leftChilds.size(); i++) {
  			leftChilds.get(i).getWords(words);
  		}
  		for (int i = 0; i < rightChilds.size(); i++) {
  			rightChilds.get(i).getWords(words);
  		}
  		
  	}