#include<bits/stdc++.h>
std::vector<int> T[110][13],G;
bool flag[20010];
signed main()
{
    int TT;
    for ( scanf("%d",&TT);TT--; )
    {
        int n,len[20010]={0};scanf("%d",&n);
        for ( int i=1;i<=n;i++ )
        {
            scanf("%d",&len[i]);
            for ( int j=1,t,p;j<=len[i];j++ ) scanf("%d%d",&t,&p),T[t][p].push_back(i);
        }
        for ( int i=1;i<=n;i++ ) flag[i]=0;
        flag[1]=1;
        for ( int t=1;t<=100;t++ ) for ( int p=1;p<=10;p++ )
        {
            bool f=false;
            for ( int i=0;i<(int)T[t][p].size();i++ ) f|=flag[T[t][p][i]];
            for ( int i=0;i<(int)T[t][p].size();i++ ) flag[T[t][p][i]]|=f;
        }
//        printf("ans::");
        for ( int i=1;i<=n;i++ ) if ( flag[i] ) G.push_back(i);
        for ( int i=0;i<(int)G.size();i++ ) printf("%d%c",G[i]," \n"[i==(int)G.size()-1]);
        for ( int t=1;t<=100;t++ ) for ( int p=1;p<=10;p++ ) T[t][p].clear();
        G.clear();
    }
}