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Well this was very complicated since Y can also be a vowel. Correct was Koyuk, but i won't let you down for one letter. So you are a winner !LOLZ
https://peakd.com/hive-121566/@sinelux/guess-the-city-errate-die-stadt-236-ende

What do you call a house made of feathers?
A lite house.

Credit: reddit
@xyzashu, I sent you an $LOLZ on behalf of sinelux

(2/10)
Farm LOLZ tokens when you Delegate Hive or Hive Tokens.
Click to delegate: 10 - 20 - 50 - 100 HP

Ah, now I got it. I only knew of 5 permanent vowels but now I learned of several other letters that can occasionally be vowels as well as consonants.
Thanks for educating me on the grammar. Btw, this was a gift in itself but thanks a lot for your generosity!