public String countOffNum(int num) {
        String countOffWord = "";
        for (Rule rule : rules) {
            countOffWord = rule.countOffNum(num);
            if (!rule.countOffNum(num).equals("")) {
                break;
            }
        }
        if (!countOffWord.equals("")) {
            return countOffWord;
        }
        else {
            return String.valueOf(num);
        }
    }