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Cognomen เข่า (Khao , เข่า, Knhe) , across the world, is quite a common surname. The cognomen เข่า is characteristic of Mongolia, where it is quite a common surname, Myanmar, where it is quite a rare surname, and Hong Kong, where it is a rare surname. In absolute terms, this name is the most popular in India, Mongolia, and Myanmar. Also, เข่า is the forename as well as the last name.