template <class T>
    ostream& operator<<(ostream& os, const set<T>& p) {
        for (typename set<T>::const_iterator it = p.begin(); it != p.end();) {
            os << *it;
            if (++it != p.end()) {
                os << ", ";
            }
        }
        return os;
    }

void eng_dict_create(map <string, set <string> >& eng_dict, map <string, string> latin_dict) {
    vector <char> translate_word;
    for (auto translate : latin_dict) {
        for (int i = 0; i < translate.second.size(); i++) {
            if (isalpha(translate.second[i])) {
                translate_word.push_back(translate.second[i]);
            }
            if (translate.second[i] == ',' || i == translate.second.size() - 1) {
                string unknown_word(translate_word.begin(), translate_word.end());
                string translation(translate.first.begin(), translate.first.end());
                eng_dict[unknown_word].insert(translation);
                translate_word.clear();
            }
        }
    }
}

void task8() {
    map <string, string> latin_dict;
    int n, count = 0;
    cin >> n;
    for (int i = 0; i < n; i++) {
        string key, value;
        cin >> key;
        getline(cin, value);
        latin_dict[key] = value;
    }
    map <string, set <string> > eng_dict;
    eng_dict_create(eng_dict, latin_dict);
    cout << eng_dict.size() << endl;
    for (auto it : eng_dict) {
        cout << it.first << " - " << it.second << endl;
    }
}