#line 2 "/home/cocojapanpan/Procon_CPP/proconLibrary/lib/template/procon.hpp"

#ifndef DEBUG
// 提出時にassertはオフ
#ifndef NDEBUG
#define NDEBUG
#endif
// 定数倍高速化
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#endif

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

#define ALL(x) (x).begin(), (x).end()
template <class T>
using vec = vector<T>;
template <class T, class S>
inline bool chmax(T &a, const S &b) {
    return (a < b ? a = b, 1 : 0);
}
template <class T, class S>
inline bool chmin(T &a, const S &b) {
    return (a > b ? a = b, 1 : 0);
}
template <class T>
constexpr T INF = 1'000'000'000;
template <>
constexpr int INF<int> = 1'000'000'000;
template <>
constexpr ll INF<ll> = ll(INF<int>) * INF<int> * 2;
#line 2 "main.cpp"

void solve() {
    int N, M;
    cin >> N >> M;
    vec<int> A(N), B(M);
    for(int &a : A) cin >> a;
    for(int &b : B) cin >> b;
    if(M == 0) {
        cout << "Yes\n";
        for(int a : A) {
            cout << "Red " << a << "\n";
        }
        return;
    }
    if(N == 0) {
        cout << "Yes\n";
        for(int b : B) {
            cout << "Blue " << b << "\n";
        }
        return;
    }
    // 赤だけ、青だけ、共通の分離
    vec<int> RedOnly, BlueOnly, Common;
    {
        vec<pair<int, bool>> concat;
        for(int a : A) concat.push_back({a, true});
        for(int b : B) concat.push_back({b, false});
        sort(ALL(concat));
        for(int i = 0; i < N + M; i++) {
            if(i < N + M - 1 && concat[i].first == concat[i + 1].first) {
                Common.push_back(concat[i].first);
                i++;
            }
            else {
                if(concat[i].second) RedOnly.push_back(concat[i].first);
                else BlueOnly.push_back(concat[i].first);
            }
        }
    }
    if(Common.empty()) {
        cout << "No\n";
        return;
    }
    cout << "Yes\n";
    for(int red : RedOnly) {
        cout << "Red ";
        cout << red << "\n";
    }
    cout << "Red " << Common[0] << "\n";
    cout << "Blue " << Common[0] << "\n"; 
    for(int blue : BlueOnly) {
        cout << "Blue ";
        cout << blue << "\n";
    }
    for(int i = 1; i < (int)Common.size(); i++) {
        if(i % 2 == 0) {
            cout << "Red ";
        } else {
            cout << "Blue ";
        }
        cout << Common[i] << "\n";
        if(i % 2 == 0) {
            cout << "Blue ";
        } else {
            cout << "Red ";
        }
        cout << Common[i] << "\n";
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int T;
    cin >> T;
    for(int i = 0; i < T; i++) {
        solve();
    }
}