#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
#define ll long long
#define ge getchar 
#define pun putchar('\n')
#define pu putchar
#define puk putchar(' ')
char c;
int tt,n,m,i,k,u,z[101],x[2000008],q[2000008],p[2000008];
bool b[20008],d[12];
ll g[50];
int sri(){c=ge();int x=0;while(c<'0')c=ge();while(c>='0')x=(x<<3)+(x<<1)+c-'0',c=ge();return x;}
void sc(ll x){int l=0;if(x==0)g[l=1]=0;while(x)g[++l]=x%10,x/=10;for(;l;l--)putchar(g[l]+'0');}
int main(){
    tt=sri();
    while(tt--){
        n=sri();k=0;
        for(i=1;i<=100;i++)z[i]=0;
        for(i=1;i<=n;i++){
            m=sri();b[i]=0;
            while(m--){
                u=sri();x[++k]=z[u];z[u]=k;q[k]=i;p[k]=sri();
            }
        }b[1]=1;
        for(u=1;u<=100;u++){
            for(i=1;i<=10;i++)d[i]=0;
            for(i=z[u];i;i=x[i])if(b[q[i]])d[p[i]]=1;        
            for(i=z[u];i;i=x[i])if(d[p[i]])b[q[i]]=1;            
        }sc(1);
        for(i=2;i<=n;i++)if(b[i])puk,sc(i);pun;
    }
    return 0;
}