f=lambda:list(map(int,input().split()))

for _ in range(int(input())):
    N,M=f()
    if   N==M==0: input(); input(); print('Yes'); continue
    elif N==0:
        input(); B=f(); print('Yes')
        for i in B: print('Blue '+str(i))
        continue
    elif M==0:
        A=f(); input(); print('Yes')
        for i in A: print('Red '+str(i))
        continue
    A=f(); B=f(); P=set(A); matched=set()
    for i in B:
        if i in P: matched.add(i)
    if not len(matched): print('No'); continue
    if len(matched)==1:
        print('Yes')
        if N==1:
            for i in B:
                if i not in matched: print('Blue '+str(i))
            for i in matched: print('Blue '+str(i)); print('Red '+str(i))
            continue
        else:
            for i in A:
                if i not in matched: print('Red '+str(i))
            for i in matched: print('Red '+str(i)); print('Blue '+str(i))
            for i in B:
                if i not in matched: print('Blue '+str(i))
            continue
    else:
        print('Yes')
        start=matched.pop(); print('Blue '+str(start)); print('Red '+str(start))
        for i in A:
            if i==start: continue
            if i not in matched: print('Red '+str(i))
        next=matched.pop(); print('Red '+str(next)); print('Blue '+str(next))
        for i in B:
            if i==start or i==next: continue
            if i not in matched: print('Blue '+str(i))
        next_is_BL = True
        while len(matched):
            now=matched.pop()
            if next_is_BL==True: print('Blue '+str(now)); print('Red '+str(now)); next_is_BL=False
            else: print('Red '+str(now)); print('Blue '+str(now)); next_is_BL=True