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Last name Gengen (根根 , Gengen , 艮艮 ) , throughout the world, is quite a rare family name. The cognomen Gengen is habitual in Egypt, where it is a very rare surname, China, and Malaysia. Not in comparison with a country's population, the name is most common in China, Egypt, and Indonesia. More frequently, Gengen is the forename as well as the last name.
Ma, Zeng, Zhao, Marak, Saret, Chang, Buaya, Reyes, Dayao, Huang, Zhang, Memita, Sangma, Anogli, Taylor, Koteski, Paglala, Ganohay, Lumapas, Eleguir, Heraldo, Carriaga, Yang, Galamiton, Wang, Chan, Li, Tu, He, Fu, Wu, Yu, Xu, Sha, Cai, Cui, Paz, Ren, Lin, Liu, Luo, Ess, Wei, Yan, Xie, Alon, Aria, Bulo, and Cantiveros