from collections import defaultdict, Counter

Q = int(input())

for case in range(Q):
    S = input()
    T = input()
    N = len(S)

    S1 = S[::2]
    S2 = S[1::2]
    T1 = T[::2]
    T2 = T[1::2]
    countS1 = Counter(S1)
    countS2 = Counter(S2)
    countT1 = Counter(T1)
    countT2 = Counter(T2)


    if (countS1 != countT1) or (countS2 != countT2):
        print("No")
        continue

    flag = False
    for [key, val] in countS1.items():
        if val >= 2:
            flag = True
    for [key, val] in countS2.items():
        if val >= 2:
            flag = True

    if flag:
        print("Yes")
        continue

    invS1 = 0
    invS2 = 0
    invT1 = 0
    invT2 = 0
    for i in range(len(S1)):
        for j in range(i + 1, len(S1)):
            if ord(S1[i]) > ord(S1[j]):
                invS1 += 1
            if ord(T1[i]) > ord(T1[j]):
                invT1 += 1

    for i in range(len(S2)):
        for j in range(i + 1, len(S2)):
            if ord(S2[i]) > ord(S2[j]):
                invS2 += 1
            if ord(T2[i]) > ord(T2[j]):
                invT2 += 1


    if (invS1 % 2 == invT1 % 2) and (invS2 % 2 == invT2 % 2):
        print("Yes")
    else:
        print("No")