from collections import defaultdict

for _ in range(int(input())):
    n, m = map(int, input().split())
    A = list(map(int, input().split()))
    B = list(map(int, input().split()))
    A.sort()
    B.sort()
    AD = defaultdict(int)
    for i in range(n):
        AD[A[i]] = i
    BD = defaultdict(int)
    for i in range(m):
        BD[B[i]] = i
    secter_set = set(A) & set(B)
    if n == 0:
        print("Yes")
        for i in range(m):
            print(f"Blue {B[i]}")
        continue
    if m == 0:
        print("Yes")
        for i in range(n):
            print(f"Red {A[i]}")
        continue
    if len(secter_set) == 0:
        print("No")
        continue
    print("Yes")
    i, j = 0, 0
    red = True
    ANS = []
    while len(secter_set) > 1:
        if red:
            a = A[i]
            ANS.append(f"Red {a}")
            i += 1
            if a in secter_set:
                secter_set.remove(a)
                l = BD[a]
                ANS.append(f"Blue {a}")
                for k in range(j, l):
                    ANS.append(f"Blue {B[k]}")
                j = l + 1
                red = False
        else:
            b = B[j]
            ANS.append(f"Blue {b}")
            j += 1
            if b in secter_set:
                secter_set.remove(b)
                l = AD[b]
                ANS.append(f"Red {b}")
                for k in range(i, l):
                    ANS.append(f"Red {A[k]}")
                i = l + 1
                red = True
    if red:
        for k in range(i, n):
            if A[k] in secter_set:
                f = A[k]
                continue
            ANS.append(f"Red {A[k]}")
        ANS.append(f"Red {f}")
        ANS.append(f"Blue {f}")
        for k in range(j, m):
            if B[k] == f:
                continue
            ANS.append(f"Blue {B[k]}")
    else:
        for k in range(j, m):
            if B[k] in secter_set:
                f = B[k]
                continue
            ANS.append(f"Blue {B[k]}")
        ANS.append(f"Blue {f}")
        ANS.append(f"Red {f}")
        for k in range(i, n):
            if A[k] == f:
                continue
            ANS.append(f"Red {A[k]}")
    print(*ANS, sep='\n')