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Cognomen Rijum (Rijum ) , around the world, is an extremely rare surname. Much more prevalently, Rijum is the forename as well as the last name.
利琼, 日琼, 赖琼, and 里琼
Kaye, Riba, Karlo, Riram, Jilen, Chakma, Dirchi, Gangkak, and Taipodia