#include
#include
using namespace std;
int main()
{
int t;
cin >> t;
for(int i = 0;i <= t-1;i++)
{
int n,m,k;
cin >> n;
list<int> l1,l2,l3;
for(int i = 0;i <= n-1;i++)
{
cin >> k;
l1.push_back(k);
}
cin >> m;
for(int j = 0;j <= m-1;j++)
{
cin >> k;
l2.push_back(k);
}
l1.sort();
l2.sort();
auto it1 = l1.begin(),it2 = l2.begin(),it3 = l3.begin();
int c1 = 0,c2 = 0;
for(it1 = l1.begin(), it2 = l2.begin(); it1 != l1.end() && it2 != l2.end();)
{
if(*it1 < *it2)
{
l3.push_back(*it1);
it1++;
it3++;
c1++;
}
else if(*it1 > *it2)
{
l3.push_back(*it2);
it2++;
it3++;
c2++;
}
else
{
l3.push_back(*it1);
it1++;
it2++;
it3++;
c1++;
c2++;
}
}
if(c1 < n)
{
while(c1 < n)
{
l3.push_back(*it1);
it1++;
it3++;
c1++;
}
}
if(c2 < m)
{
while(c2 < m)
{
l3.push_back(*it2);
it2++;
it3++;
c2++;
}
}
for(auto i:l3)
{
cout << i << " ";
}
cout << "\n";
}
}