public Object get(String key) {
        Letter letter = root;
        for (int i = 0; i < key.length(); i++) {
            for (int j = 0; j < letter.subListCursor; j++) {
                if (letter.subList[j].key == key.charAt(i)) {
                    letter = letter.subList[j];
                    break;
                }
            }
        }
        return letter.value;
    }