#include <bits/stdc++.h>
#include <atcoder/all>
#define OVERLOAD_REP(_1, _2, _3, name, ...) name
#define REP1(i,n) for (auto i = std::decay_t<decltype(n)>{}; (i) != (n); ++(i))
#define REP2(i,l,r) for (auto i = (l); (i) != (r); ++(i))
#define rep(...) OVERLOAD_REP(__VA_ARGS__, REP2, REP1)(__VA_ARGS__)
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
using namespace std;
using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
using P = pair<int,int>;
using LP = pair<long long,long long>;
using SP = pair<string,string>;
using vi = vector<int>;
using vl = vector<long long>;
using vs = vector<string>;
using vc = vector<char>;
using mint1 = modint1000000007;
using mint9 = modint998244353;
const int INF = 2e9;
const long long LINF = 4e18;
const int di[] = {0,1,0,-1,-1,1,-1,1};
const int dj[] = {1,0,-1,0,1,1,-1,-1};
template<class T> inline bool chmin(T& a, T b){if(a>b){a=b;return true;}return false;}
template<class T> inline bool chmax(T& a, T b){if(a<b){a=b;return true;}return false;}
void YesNo (bool ok , const string &s , const string &t) {if(ok) cout << s << endl; else cout << t << endl;} 


//-----def end-----//

void solve () {
    int n , m;
    cin >> n >> m;
    vector<int> a(n) , b(m);
    rep(i , n) cin >> a[i];
    rep(i , m) cin >> b[i];
    set<int> na , nb , c;
    for(int i : a) na.insert(i);
    for(int i : b) nb.insert(i);
    for(int i : a) if(nb.count(i)) c.insert(i);
    for(int i : c) na.erase(i);
    for(int i : c) nb.erase(i);
    if(m == 0) {
        cout << "Yes" << endl;
        for(int i : a) cout << "Red" << ' ' << i << endl;
    } else if (n == 0) {
        cout << "Yes" << endl;
        for(int i : b) cout << "Blue" << ' ' << i << endl;
    } else {
        if(c.size() == 0) {
            cout << "No" << endl;
            return;
        }
        cout << "Yes" << endl;
        for(int i : na) cout << "Red" << ' ' << i << endl;
        int nc = *c.begin();
        cout << "Red" << ' ' << nc << endl;
        cout << "Blue" << ' ' << nc << endl;
        c.erase(nc);
        for(int i : nb) cout << "Blue" << ' ' << i << endl;
        int flag = 0;
        for(int i : c) {
            if(flag) {
                cout << "Red" << ' ' << i << endl;
                cout << "Blue" << ' ' << i << endl;
            } else {
                cout << "Blue" << ' ' << i << endl;
                cout << "Red" << ' ' << i << endl;
            }
            flag ^= 1;
        }
    }
}

int main () {
    int t;
    cin >> t;
    rep(i , t) solve();
	return 0;
}