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

void solve(){
    int N, M;
    cin >> N >> M;
    vector<int> A(N), B(M), ab, a, b;
    for(auto &v : A) cin >> v;
    for(auto &v : B) cin >> v;
    sort(A.begin(), A.end());
    sort(B.begin(), B.end());
    set_intersection(A.begin(), A.end(), B.begin(), B.end(), inserter(ab, ab.end()));
    set_difference(A.begin(), A.end(), ab.begin(), ab.end(), inserter(a, a.end()));
    set_difference(B.begin(), B.end(), ab.begin(), ab.end(), inserter(b, b.end()));
    if(!a.empty() && !b.empty() && ab.empty()){
        cout << "No" << '\n';
        return;
    }
    cout << "Yes" << '\n';
    for(auto &v : a)cout << "Red " << v << '\n';
    if(!ab.empty()){
        cout << "Red " << ab[0] << '\n';
        cout << "Blue " << ab[0] << '\n';
    }
    for(auto &v : b)cout << "Blue " << v << '\n';
    for(int i = 1; i < ab.size(); i++){
        if(i & 1){
            cout << "Blue " << ab[i] << '\n';
            cout << "Red " << ab[i] << '\n';
        }else{
            cout << "Red " << ab[i] << '\n';
            cout << "Blue " << ab[i] << '\n';
        }
    }
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int T;
    cin >> T;
    while(T--) solve();
}