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Surname Gamkak (Gamkak ) , in the world, is a rare cognomen. The cognomen Gamkak is habitual in Southern Asia, particularly India, where it is a very rare surname.
Koi, Ijum, Yasa, Yami, Yabi, Marna, Mibom, Jarge, Jummi, Tajum, Yabom, Marlar, and Jarken