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Family name Riho (Riho , リホ , Рихо ) , in the world, is a common last name. The last name Riho is habitual in Japan, where it is quite a common surname, Czechia, where it is a rare surname, and Hungary. Not in comparison with a country's population, it is commonest in Japan, Morocco, and China. Much less frequently, Riho is the forename as well as the last name.
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