import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Set;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int t = Integer.parseInt(br.readLine());
		PrintWriter pw = new PrintWriter(System.out);
		for (int z = 0; z < t; z++) {
			String[] sa = br.readLine().split(" ");
			int n = Integer.parseInt(sa[0]);
			int m = Integer.parseInt(sa[1]);
			sa = br.readLine().split(" ");
			int[] a = new int[n];
			Set<Integer> seta = new HashSet<>();
			for (int i = 0; i < n; i++) {
				a[i] = Integer.parseInt(sa[i]);
				seta.add(a[i]);
			}
			sa = br.readLine().split(" ");
			int[] b = new int[m];
			Set<Integer> setb = new HashSet<>();
			for (int i = 0; i < m; i++) {
				b[i] = Integer.parseInt(sa[i]);
				setb.add(b[i]);
			}

			for (int i = 0; i < n; i++) {
				if (!setb.contains(a[i])) {
					seta.remove(a[i]);
				}
			}
			if (seta.isEmpty()) {
				if (n == 0 || m == 0) {
					pw.println("Yes");
					if (n == 0) {
						for (int i = 0; i < m; i++) {
							pw.println("Blue " + b[i]);
						}
					} else {
						for (int i = 0; i < n; i++) {
							pw.println("Red " + a[i]);
						}
					}
				} else {
					pw.println("No");
				}
			} else {
				pw.println("Yes");
				for (int i = 0; i < n; i++) {
					if (!seta.contains(a[i])) {
						pw.println("Red " + a[i]);
					}
				}
				Integer[] arr = seta.toArray(new Integer[0]);
				pw.println("Red " + arr[0]);
				pw.println("Blue " + arr[0]);
				for (int i = 0; i < m; i++) {
					if (!seta.contains(b[i])) {
						pw.println("Blue " + b[i]);
					}
				}
				for (int i = 1; i < arr.length; i++) {
					if (i % 2 == 0) {
						pw.println("Red " + arr[i]);
						pw.println("Blue " + arr[i]);
					} else {
						pw.println("Blue " + arr[i]);
						pw.println("Red " + arr[i]);
					}
				}
			}
		}
		pw.flush();
		br.close();

	}
}