import collections
for _ in range(int(input())):
c = collections.Counter(input().split())
words, length = [], 0
for w, c in c.most_common():
length = max(length, c)
if length != c:
break
words.append(w)
words.sort()
print(words[0])
aW1wb3J0IGNvbGxlY3Rpb25zCgoKZm9yIF8gaW4gcmFuZ2UoaW50KGlucHV0KCkpKToKCWMgPSBjb2xsZWN0aW9ucy5Db3VudGVyKGlucHV0KCkuc3BsaXQoKSkKCXdvcmRzLCBsZW5ndGggPSBbXSwgMAoJZm9yIHcsIGMgaW4gYy5tb3N0X2NvbW1vbigpOgoJCWxlbmd0aCA9IG1heChsZW5ndGgsIGMpCgkJaWYgbGVuZ3RoICE9IGM6CgkJCWJyZWFrCgkJd29yZHMuYXBwZW5kKHcpCgl3b3Jkcy5zb3J0KCkKCXByaW50KHdvcmRzWzBdKQ==
MwphcHBsZSBvcmFuZ2UgYmFuYW5hIGJhbmFuYSBvcmFuZ2UKb2ggeW91IHRvdWNoIG15IHRyYWxhbGEgbW1tIG15IGRpbmcgZGluZyBkb25nCnEgdyBlIHIgdCB5IHUgaSBvIHAgYSBzIGQgZiBnIGggaiBrIGwgeiB4IGMgdiBiIG4gbQ==
3
apple orange banana banana orange
oh you touch my tralala mmm my ding ding dong
q w e r t y u i o p a s d f g h j k l z x c v b n m