#include<bits/stdc++.h>
#define LL long long
#define LLL __int128
#define uint unsigned
#define ldb long double
#define uLL unsigned long long
using namespace std;
const int N=5e5+5;
int n,rt=1;
int ans[N];
vector<int>A[N];
inline bool solve(int x,int y){
    ans[x]=y;
    if(x%n+1!=rt){
        if(binary_search(A[x%n+1].begin(),A[x%n+1].end(),y))
            return solve(x%n+1,y);
        else return solve(x%n+1,A[x%n+1][0]);
    }
    else{
        if(y==ans[rt])return 1;
        if(binary_search(A[x%n+1].begin(),A[x%n+1].end(),y))return 0;
        return 1;
    }
}
signed main(){
    cin.tie(0)->sync_with_stdio(0);
    cin>>n;
    for(int i=1;i<=n;++i){
        int k;cin>>k;
        for(int j=0;j<k;++j){
            int x;cin>>x,A[i].emplace_back(x);
        }
        sort(A[i].begin(),A[i].end());
        if(A[i].size()<A[rt].size())rt=i;
    }
    for(auto i:A[rt])if(solve(rt,i)){
        for(int j=1;j<=n;++j)cout<<ans[j]<<" \n"[j==n];
        return 0;
    }
    cout<<"-1\n";
    return 0;
}
/*
*/