public ArrayList<String> wordsStartingWith(String prefix)
    
   ArrayList<String> toreturn = new ArrayList<String>();
    
   {
        int index = 0;
        
        while (index < dWords.size()) 
        {
        
        if (dWords.get(index).startsWith(prefix))
        {
           toreturn.add(dWords.get(index));
        }

        index++;

        }
        
        return toreturn;
 }