#include <iostream>
#include <vector>

using namespace std;

int main() {
    int m, deepmax = 0;
    cin >> m;
    vector <vector <string>> v;
    for (int i = 0; i < m ; ++i) {
        int n;
        cin >> n;
        vector <string> vv;
        v.push_back(vv);
        for (int j = 0; j < n; ++j) {
            string s;
            cin >> s;
            v[i].push_back(s);
            if (v[i].size() > deepmax) {
                deepmax = v[i].size();
            }
        }
    }

    for (int i = 0; i < deepmax; ++i) {
        for (int j = 0; j < m; ++j) {
            if (i >= v[j].size()) {
                cout << "\t";
            } else {
                cout << v[j][i] << "\t";
            }
        }
        cout << endl;
    }
    return 0;
}