#include <iostream>
#include <algorithm>
using namespace std;
int main ()
{
int a[1005];
int t;
scanf ( "%d", &t );
while ( t -- )
{
int n;
scanf ( "%d", &n );
for ( int i = 0; i < n; i ++ )
{
scanf ("%d", &a[i]);
}
sort ( a, a + n );
printf ("%d", a[0]);
for ( int i = 1; i < n; i ++ )
{
printf (" %d",a[i]);
}
printf ("\n");
}
//system ("pause");
return 0;
}


