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Surname Guantan (Guantan ) , around the world, is an extremely rare last name. Much more prevalently, Guantan is the forename as well as the last name.
关潭, 冠坛, 冠檀, 冠潭, 官坦, 官潭, 官贪, 管谈, 观坦, 观谭, 观锬, and 贯檀
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