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Family name Yooen (Yooen) , throughout the world, is an extremely rare surname.
Yoøn, Yòøn, Yôöñ, Yôøñ, Yõön, Yõöñ, Yőöñ, Ýoøn, Ýoøñ, Ýõøn, Ÿoøn, and Ÿoøñ