import re
wzor = r"([A-Za-z0-9\._]{1,20})@([A-Za-z0-9\._]{1,20})\.([A-Za-z]{2,3})"
kropki = r"(\.){2}|(\.@)|(@\.y)"
for _ in range(int(input())):
email = input()
match = re.match(wzor,email)
if not match:
print ("Nie")
elif re.search(kropki,email):
print("Nie")
elif len(match.group())==len(email):
print("Tak")
else:
print("Nie")
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