#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

int main() {
    cin.tie(0);
    ios_base::sync_with_stdio(false);
    int t;
    cin >> t;
    while (t--) {
        int n;
        cin >> n;
        vector<int> len(n);
        vector<int> who[101][11];
        for (int i = 0; i < n; i++) {
            cin >> len[i];
            int t, p;
            for (int j = 0; j < len[i]; j++) {
                cin >> t >> p;
                who[t][p].push_back(i);
            }
        }
        
        vector<int> vis(n);
        vis[0] = 1;
        for (int i = 1; i <= 100; i++) {
            for (int j = 1; j <= 10; j++) {
                bool flag = false;
                for (int x : who[i][j]) {
                    if (vis[x]) {
                        flag = true; break;
                    }
                }
                if (flag) {
                    for (int x : who[i][j]) {
                        vis[x] = 1;
                    }
                }
            }
        }
        
        int space = 0;
        for (int i = 0; i < n; i++) {
            if (vis[i]) {
                if (space) cout << " ";
                cout << i+1;
                space = 1;
            }
        }
        cout << endl;
    }
}