#include <iostream>
#include <map>
#include <string>
#include <set>
#include <algorithm>

std::map<std::string, std::string> parseString(const std::string& string) {
    std::map<std::string, std::string> pairedWordsFromString;
    size_t currentPosition = 0, prevPosition = 0;

    currentPosition = string.find(' ', prevPosition);
    std::string englishWord(string, prevPosition, currentPosition - prevPosition);

    currentPosition += 3;
    prevPosition = currentPosition;

    while (currentPosition < string.size()) {
        currentPosition = string.find(',', prevPosition);
        if (currentPosition == std::string::npos) {
            currentPosition = string.size();
        }
        std::string latinWord(string, prevPosition, currentPosition - prevPosition);
        pairedWordsFromString[latinWord] = englishWord;

        currentPosition += 2;
        prevPosition = currentPosition;
    }

    return pairedWordsFromString;
}


class LatinEnglishDict {
    std::map<std::string, std::set<std::string>> latinEnglishDict_;

    void AddWord(const std::pair<std::string, std::string>& wordsPair) {
        latinEnglishDict_[wordsPair.first].insert(wordsPair.second);
    }

    void AddMapOfWords(const std::map<std::string, std::string>& wordsMap) {
        for (const auto& wordsPair : wordsMap) {
            this->AddWord(wordsPair);
        }
    }

public:

    void FillDict() {
        std::string string;
        while (getline(std::cin, string)) {
            this->AddMapOfWords(parseString(string));
        }
    }

    void PrintDict() {
        std::cout << latinEnglishDict_.size() << '\n';
        for (const auto& latinWord : latinEnglishDict_) {
            std::cout << latinWord.first << " - ";
            for (auto englishWord = latinWord.second.begin(); englishWord != latinWord.second.end(); ++englishWord) {
                if (englishWord != --latinWord.second.end()) {
                    std::cout << *englishWord << ", ";
                } else {
                    std::cout << *englishWord << '\n';
                }
            }
        }
    }

};


int main() {
    LatinEnglishDict dictionary;
    dictionary.FillDict();
    dictionary.PrintDict();
    return 0;
}