#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N;
	cin >> N;
	vector<vector<int>> L( N );
	for( int i = 0; i < N; i++ ) {
		int K;
		cin >> K;
		for( int j = 0; j < K; j++ ) {
			int l;
			cin >> l;
			L[i].push_back( l );
		}
	}


	for( int i = 0; i < N; i++ ) {
		sort( L[i].begin(), L[i].end(), greater<int>() );
		int n = L[i].size();
		for( int j = 0; j < n; j++ ) {
			if( j ) cout << " ";
			cout << L[i][j];
		}
		cout << endl;
	}
}