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In the world, Gayun (Gayun , 가윤 , Гаюн ) is a very rare epicene forename. More frequently, Gayun is the last name as well as the forename.
Гаиун, 伽云, 伽赟, 伽韵, 加云, 加允, 加昀, 加耘, 加芸, 加蕴, 加赟, 加运, 加鋆, 加雲, 加韵, and 尜云