for _ in range(int(input())):
  n, m = map(int, input().split())
  a = list(map(int, input().split()))
  b = list(map(int, input().split()))
  sa = set(a)
  sb = set(b)
  flg = 1
  for v in sa:
    if v in sb:
      flg = 0
      break
  if flg:
    if n or m:
      for v in a:
        print("Red", v)
      for v in b:
        print("Blue", v)
      continue
    print("No")
    continue
  print("Yes")
  a1 = []
  a2 = []
  for v in a:
    if v in sb:
      a1.append(v)
    else:
      a2.append(v)
  b1 = []
  b2 = []
  for v in b:
    if v in sa:
      b1.append(v)
    else:
      b2.append(v)
  a1.sort()
  for v in a2:
    print("Red", v)
  x = a1.pop()
  print("Red", x)
  print("Blue", x)
  for v in b2:
    print("Blue", v)
  flg = 1
  for v in a1:
    if flg:
      print("Blue", v)
      print("Red", v)
    else:
      print("Red", v)
      print("Blue", v)
    flg ^= 1