#include<bits/stdc++.h>
#define pb push_back
using namespace std;
const int M=2e4+5,L=2e5+5;
int n;
bool vis[M];
vector<int> g[105][15];
void Clear(){
    for(int i=1;i<=100;++i)for(int j=1;j<=10;++j)g[i][j].clear();
    memset(vis,0,sizeof(vis));
    vis[1]=1;
}
void solve(){
    Clear();
    scanf("%d",&n);
    for(int i=1,x,t,p;i<=n;++i){
        scanf("%d",&x);
        for(;x;--x){
            scanf("%d%d",&t,&p);
            g[t][p].pb(i);
        }
    }
    for(int i=1;i<=100;++i)for(int j=1;j<=10;++j){
        bool flag=0;
        for(int k=0;k<g[i][j].size();++k){
            int x=g[i][j][k];
            flag|=vis[x];
        }
        if(flag)for(int k=0;k<g[i][j].size();++k){
            int x=g[i][j][k];
            vis[x]=1;
        }
    }
    bool flag=0;
    for(int i=1;i<=n;++i)if(vis[i]){
        if(flag)putchar(' ');
        flag=1;
        printf("%d",i);
    }
    puts("");
}
int main(){
    int t;scanf("%d",&t);
    for(;t;--t)solve();
    return 0;
}