#include <iostream>
#include <string>
#include <map>
#include <set>
#include <vector>
using namespace std;
int main() {
    int n;
    cin >> n;
    map<string, vector<string>> dict;
    for (int i = 0; i <= n; i++) {
        string s;
        getline(cin, s);
        string tmp = "";
        vector<string> tmp1(0);
        int x = 0, y = 0;
        for (int j = 0; j < s.length(); j++) {
            if (s[j] == '-') {
                y = j - 2;
                tmp = s.substr(x, y + 1-x);
                x = j + 2;
            }
            else if (s[j] == ',') {
                y = j - 1;
                tmp1.push_back(s.substr(x, y + 1-x));
                x = j + 2;
            }
            else if (j == s.length() - 1) {
                tmp1.push_back(s.substr(x, j + 1 - x));
            }
        }
        dict[tmp] = tmp1;
    }
    set<string> xin;
    for (auto now : dict) {
        for (auto now1 : now.second) {
            xin.insert(now1);
        }
    }
    cout << xin.size() << endl;
    for (auto now : xin) {
        vector<string> tmp(0);
        for (auto now1 : dict) {
            for (auto now2 : now1.second) {
                if (now == now2) {
                    tmp.push_back(now1.first);
                }
            }
        }
        cout << now<<" - ";
        for (auto now3 : tmp) {
            if (now3 == tmp[tmp.size() - 1]) cout << now3;
            else cout << now3 << ", ";
        }
        cout << endl;
    }
    return 0;
}