import java.io.*;
import java.util.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int t = sc.nextInt();
        StringBuilder sb = new StringBuilder();
        while (t-- > 0) {
            int n = sc.nextInt();
            int m = sc.nextInt();
            HashSet<Integer> red = new HashSet<>();
            for (int i = 0; i < n; i++) {
                red.add(sc.nextInt());
            }
            HashSet<Integer> blue = new HashSet<>();
            TreeSet<Integer> both = new TreeSet<>();
            for (int i = 0; i < m; i++) {
                int x = sc.nextInt();
                if (red.contains(x)) {
                    red.remove(x);
                    both.add(x);
                } else {
                    blue.add(x);
                }
            }
            if (both.size() == 0 && red.size() > 0 && blue.size() > 0) {
                sb.append("No\n");
                continue;
            }
            sb.append("Yes\n");
            for (int x : red) {
                sb.append("Red ").append(x).append("\n");
            }
            if (both.size() > 0) {
                int y = both.pollFirst();
                sb.append("Red ").append(y).append("\n");
                sb.append("Blue ").append(y).append("\n");
            }
            for (int x : blue) {
                sb.append("Blue ").append(x).append("\n");
            }
            boolean isBlue = true;
            for (int x : both) {
                if (isBlue) {
                    sb.append("Blue ").append(x).append("\n");
                    sb.append("Red ").append(x).append("\n");
                } else {
                    sb.append("Red ").append(x).append("\n");
                    sb.append("Blue ").append(x).append("\n");
                }
                isBlue ^= true;
            }
        }
        System.out.print(sb);
    }
}

class Utilities {
    static String arrayToLineString(Object[] arr) {
        return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
    }
    
    static String arrayToLineString(int[] arr) {
        return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public int[] nextIntArray() throws Exception {
        return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}