// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll = long long;
#define rep(i,n) for (ll i = 0; i < (n); ++i)
using vl = vector<ll>;
using vvl = vector<vl>;
using P = pair<ll,ll>;
#define pb push_back
#define int long long
#define double long double
#define INF (ll) 3e18
// Ctrl + Shift + B コンパイル
// Ctrl + C 中断
// ./m 実行


void solve(){
  int n, m; cin >> n >> m;
  map<int, int> mp;
  rep(i, n) {
    int x; cin >> x;
    mp[x] += 1;
  }
  rep(i,m) {
    int x; cin >> x;
    mp[x] += 2;
  }
  if (n == 0 || m == 0){
    cout << "Yes" << endl;
    for(auto [x, ab] : mp){
      if (ab & 1) cout << "Red " << x << endl;
      if (ab & 2) cout << "Blue " << x << endl;
    }
    return;
  }
  vl three;
  for(auto [x, ab] : mp) if (ab == 3) three.push_back(x);
  if (!three.size()) {cout << "No" << endl; return;}
  cout << "Yes" << endl;
  for(auto [x, ab] : mp){
    if (ab == 1) cout << "Red " << x << endl;
  }
  cout << "Red " << three[0] << endl;
  cout << "Blue " << three[0] << endl;
  for(auto [x, ab] : mp){
    if (ab == 2) cout << "Blue " << x << endl;
  }
  int c = 1;
  auto teban = [&]() -> string {
    if (c) return "Blue ";
    else return "Red ";
  };
  for(int i = 1; i < three.size(); i++){
    cout << teban() << three[i] << endl;
    c ^= 1;
    cout << teban() << three[i] << endl;
  }
}

signed main(){
  int t; cin >> t;
  rep(_,t){
    solve();
  }
}