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

#define int long long
#define endl '\n'
typedef unsigned long long ull;

const int N=1e5;
const int INF=0x3f3f3f3f3f3f3f3f;

int a[4][4],b[4][4];

void solve()
{
    for(int i=1;i<=3;++i)
    {
        for(int j=1;j<=3;++j)
        {
            a[i][j]=b[i][j]=0;
        }
    }
    
    int m;
    cin >> m;
    for(int i=1;i<=m;++i)
    {
        int u,v;
        cin >> u >> v;
        a[u][v]=a[v][u]=1;
    }
    cin >> m;
    for(int i=1;i<=m;++i)
    {
        int u,v;
        cin >> u >> v;
        b[u][v]=b[v][u]=1;
    }
    int f[4];
    for(f[1]=1;f[1]<=3;++f[1])
    {
        for(f[2]=1;f[2]<=3;++f[2])
        {
            for(f[3]=1;f[3]<=3;++f[3])
            {
                if(f[1]==f[2]||f[1]==f[3]||f[2]==f[3])    continue;
                // i,j,k   1,2,3 a -> b
                int ok=1;
                for(int x=1;x<=3;++x)
                {
                    for(int y=1;y<=3;++y)
                    {
                        if(a[x][y]!=b[f[x]][f[y]])
                        {
                            ok=0;
                        }
                    }
                }
                if(ok)
                {
                    cout << "yes\n";
                    return;
                }
                
            }
        }
    }
    cout << "no\n";

}

signed main()
{
    //cout.flags(ios::fixed); cout.precision(8);
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int T=1;
    cin >> T;
    for(int i=1;i<=T;++i)
    {
        solve();
    }
    return 0;
}
/*

*/