#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main() {
    int n;
    cin >> n;
    vector<vector<int>> arrays(n);

    for (int i = 0; i < n; i++) {
        int size;
        cin >> size;
        for (int j = 0; j < size; j++) {
            int num;
            cin >> num;
            arrays[i].push_back(num);
        }
    }

    for (int i = 0; i < n; i++) {
        sort(arrays[i].begin(), arrays[i].end());
    }

    sort(arrays.begin(), arrays.end());

    for (int i = 0; i < n; i++) {
        for (const auto& elem : arrays[i]) {
            cout << elem <<" ";
        }
        cout << endl;
    }

    return 0;
}