#include <stdio.h>
#include <stdlib.h>

int cmp_int (const void *ap, const void *bp) {
  int a = *(int *)ap;
  int b = *(int *)bp;
  
  if (a < b) {
    return -1;
  }
  
  if (a > b) {
    return 1;
  }
  
  return 0;
}

int main () {
  int t = 0;
  int n = 0;
  int m = 0;
  int a[200000] = {};
  int b[200000] = {};
  
  int res = 0;
  
  int r[200000] = {};
  int bl[200000] = {};
  int eq[200000] = {};
  
  res = scanf("%d", &t);
  while (t > 0) {
    int aidx = 0;
    int bidx = 0;
    int rcnt = 0;
    int bcnt = 0;
    int eqcnt = 0;
    res = scanf("%d", &n);
    res = scanf("%d", &m);
    for (int i = 0; i < n; i++) {
      res = scanf("%d", a+i);
    }
    for (int i = 0; i < m; i++) {
      res = scanf("%d", b+i);
    }
    qsort(a, n, sizeof(int), cmp_int);
    qsort(b, m, sizeof(int), cmp_int);
    while (aidx < n || bidx < m) {
      if (aidx < n && (bidx >= m || a[aidx] < b[bidx])) {
        r[rcnt] = a[aidx];
        rcnt++;
        aidx++;
      } else if (bidx < m && (aidx >= n || a[aidx] > b[bidx])) {
        bl[bcnt] = b[bidx];
        bcnt++;
        bidx++;
      } else {
        eq[eqcnt] = a[aidx];
        eqcnt++;
        aidx++;
        bidx++;
      }
    }
    if (m <= 0) {
      printf("Yes\n");
      for (int i = 0; i < n; i++) {
        printf("Red %d\n", a[i]);
      }
    } else if (n <= 0) {
      printf("Yes\n");
      for (int i = 0; i < m; i++) {
        printf("Blue %d\n", b[i]);
      }
    } else if (eqcnt <= 0) {
      printf("No\n");
    } else {
      printf("Yes\n");
      for (int i = 0; i < rcnt; i++) {
        printf("Red %d\n", r[i]);
      }
      printf("Red %d\n", eq[0]);
      printf("Blue %d\n", eq[0]);
      for (int i = 0; i < bcnt; i++) {
        printf("Blue %d\n", bl[i]);
      }
      for (int i = 1; i < eqcnt; i++) {
        if (i%2 == 0) {
          printf("Red %d\n", eq[i]);
          printf("Blue %d\n", eq[i]);
        } else {
          printf("Blue %d\n", eq[i]);
          printf("Red %d\n", eq[i]);
        }
      }
    }
    t--;
  }
  
  return 0;
}