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Cognomen 拉克 (拉克 , Ruck , Lack ) , all around the world, is a common surname. The cognomen 拉克 is habitual in Barbados, where it is quite a common surname, Switzerland, and Austria. In absolute terms, this name is the most popular in the United States, Germany, and the United Kingdom. Very seldom, 拉克 is the forename as well as the last name.