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

using ll   [[maybe_unused]] = long long;
using ld   [[maybe_unused]] = long double;
using vl   [[maybe_unused]] = vector<ll>;

#define rep(i,n) for(int i=0; i<(int)(n); ++i)
#define rep_r(i,n) for(int i=(int)(n)-1; i>=0; --i)
#define reps(i,n,m) for(ll i=(ll)(n); i<(ll)(m); ++i)
#define reps_r(i,n,m) for(ll i=(ll)(m)-1; i>=(ll)(n); --i)
#define rep_a(i,I) for(const auto& i:I)

#define debuglist(a) {cerr<<#a<<":";for(auto _e:a){cerr<<" "<<_e;}cerr<<"\n";}
#define debug(x) cerr<<#x<<": "<<x<<"\n"
#define ans_exit(x) {cout<<x<<"\n"; exit(0);}
#define ans_return(x) {cout<<x<<"\n"; return;}

#define SIZE(obj) ll(obj.size()) 
#define ALL(obj) (obj).begin(), (obj).end()
#define rALL(obj) (obj).rbegin(), (obj).rend()

#define INF32 2147483647
#define INF64 9223372036854775807
#define MOD 1000000007

void mysort(int a[],int n){
    int max,tmp;
    rep(i,n-1){
        max=i;
        reps(j,i+1,n) if(a[max]<a[j]) max=j;
        tmp=a[i];
        a[i]=a[max];
        a[max]=tmp;
    }
}

int main(){
    //cout<<fixed<<setprecision(10);
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,k,l[20];
    cin>>n;
    rep(j,n){
        cin>>k;
        rep(i,k) cin>>l[i];
        mysort(l,k);
        rep(i,k-1) cout<<l[i]<<" ";
        cout<<l[k-1]<<"\n";
    }
}