// Source: https://u...content-available-to-author-only...o.guide/general/io
 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
int main() {
    int t;
    cin>>t;
    while(t--){
        ll n;
        cin>>n;
        ll m = (n*(n-1))/2;
        vector<ll> b(m);
        for(int i=0;i<m;++i) cin>>b[i];
        sort(b.begin(), b.end());
        ll maxi = *b.rbegin();
        // for(auto u: b) cout<<u<<' ';
        // cout<<endl;
        vector<ll> ans;
        for(int i=0;i<m;i+=--n){
            // cout<<i<<' ';
            ans.push_back(b[i]);
        }
        ans.push_back(maxi+1);
        for(auto i: ans) cout<<i<<' ';
        cout<<endl;
    }
 
}
 
/*
 
12
-3
44
0
393
87
179179179436104
-6
 
*/

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NQozCjEgMyAxCjIKMTAKNAo3IDUgMyA1IDMgMwo1CjIgMiAyIDIgMiAyIDIgMiAyIDIKNQozIDAgMCAtMiAwIC0yIDAgMCAtMiAtMgo=

5
3
1 3 1
2
10
4
7 5 3 5 3 3
5
2 2 2 2 2 2 2 2 2 2
5
3 0 0 -2 0 -2 0 0 -2 -2