using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;
class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    static string[] SList(long n) => Enumerable.Repeat(0, (int)n).Select(_ => ReadLine()).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var t = NN;
        var ans = new List<string>();
        for (var u = 0; u < t; ++u)
        {
            var c = NList;
            var (n, m) = (c[0], c[1]);
            var a = new int[n];
            var b = new int[n];
            if (n > 0) a = NList;
            else ReadLine();
            if (m > 0) b = NList;
            else ReadLine();
            var bset = new HashSet<int>(b);
            var eq = new HashSet<int>();
            foreach (var ai in a) if (bset.Contains(ai)) eq.Add(ai);
            if (n == 0)
            {
                ans.Add("Yes");
                foreach (var bi in b) ans.Add("Blue " + bi);
            }
            else if (m == 0)
            {
                ans.Add("Yes");
                foreach (var ai in a) ans.Add("Red " + ai);
            }
            else if (eq.Count == 0)
            {
                ans.Add("No");
            }
            else
            {
                ans.Add("Yes");
                foreach (var ai in a) if (!eq.Contains(ai)) ans.Add("Red " + ai);
                var tmp = 0;
                foreach (var ai in eq)
                {
                    if (tmp % 2 == 0)
                    {
                        ans.Add("Red " + ai);
                        ans.Add("Blue " + ai);
                    }
                    else
                    {
                        ans.Add("Blue " + ai);
                        ans.Add("Red " + ai);
                    }
                    if (tmp == 0)
                    {
                        foreach (var bi in b) if (!eq.Contains(bi)) ans.Add("Blue " + bi);
                    }
                    ++tmp;
                }
            }
        }
        WriteLine(string.Join("\n", ans));
    }
}