q = 1
q = int(input())

for _ in range(q):
  s = input()
  t = input()
  n = len(s)
  cou = [0]*26
  for i in s:
    cou[ord(i) - ord('a')] += 1
  for i in t:
    cou[ord(i) - ord('a')] -= 1
  
  tf = False
  for i in range(26):
    if cou[i]:
      tf = True
      break

  
  if n%2:
    c1 = [0]*26
    c2 = [0]*26
    for i in range(n):
      if i%2 == 0:
        c1[ord(s[i]) - ord('a')] += 1
        c1[ord(t[i]) - ord('a')] -= 1
      else:
        c2[ord(s[i]) - ord('a')] += 1
        c2[ord(t[i]) - ord('a')] -= 1
    for i in range(26):
      if c1[i]:
        tf = True
        break
      if c2[i]:
        tf = True
        break
  else:
    c = [0]*676
    for i in range(0,n,2):
      c11 = ord(s[i]) - ord('a')
      c12 = ord(s[i+1]) - ord('a')
      c21 = ord(t[i]) - ord('a')
      c22 = ord(t[i+1]) - ord('a')
      c[c11*26+c12] += 1
      c[c21*26+c22] -= 1
    for i in c:
      if i:
        tf = True
        break

  if tf:
    print("No")
  else:
    print("Yes")