#include <iostream>
#include <string>
#include <set>
#include <map>
using namespace std;

using articles = map <string, set <string>>;


void SplitLine (articles & grammar) {
    if (cin) {
        string vterm, temp;
        cin >> vterm >> temp; // считывание слова и дефиса
        while (cin && ('\n' != cin.peek ())) {
            cin >> temp;
            if (',' == temp [temp.length () - 1]) // последний символ — запятая?
            temp.pop_back ();
            grammar [temp].insert (", " + vterm);
        }
    }
}

int main ()
{
    int n;
    cin >> n;
    if (n < 1) return 0;
    articles lat_eng;
    for (int i = 0; i < n; ++i)
        SplitLine (lat_eng);
    cout << lat_eng.size () << endl;
    for (auto now : lat_eng) {
        string desc = "";
        for (auto it : now.second)
            desc += it;
        desc [0] = '-';
        cout << (now.first + ' ' + desc + '\n');
    }
    return 0;
}