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In the entire world, Чибірев (Чибірев ) is an extremely rare unknown gender first name. Much more prevalently, Чибірев is the last name as well as the forename.
Chibirev, and Chybirev
Олег, Ігор, Артем, Роман, Максим, Микита, Дмитро, Віктор, Сергій, Володимир, and Олександр