#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
using namespace std;
typedef long long int ll;
typedef pair<int,int> P;
#define yn {puts("YES");}else{puts("NO");}
#define MAX_N 200005

int main() {
    int n; cin >> n;
    vector<int> v[20];
    rep(i,n){
        int k; cin >> k;
        rep(j,k){
            int l; cin >> l;
            v[i].push_back(l);
        }
        sort(v[i].begin(), v[i].end(), greater<int>());
    }

    rep(i,n){
        rep(j,v[i].size()){
            cout << v[i][j] << ' ';
        }
        cout << endl;
    }
    return 0;
}