#include<vector>
#include<iostream>
#include<cmath>

using namespace std;

int main() {
    size_t m, n, need = 0;
    cin >> m;
    vector < vector < string > > v(1000, vector < string > (m));

    for (size_t i = 0; i < m; i++) {
        cin >> n;
        for (size_t j = 0; j < n; j++) {
            cin >> v[j][i];
        }
        need = max(need, n);
    }

    for (size_t i = 0; i < need; i++) {
        for (size_t j = 0; j < m; j++) {
            cout << v[i][j] << '\t';
        }
        cout << endl;
    }
    return 0;
}