<prompt> Fumana fane e tsebahalang haholo Australianan  <response>: Instruction in English: Find the most common last name in Australia . Response in English: According to recent data, the most common last name in Australia is Smith, followed by Nguyen, Williams, Brown, and Wilson. . Response in Sesotho: Ho latela lintlha tsa morao-rao, lebitso le tloaelehileng la ho qetela Australia ke Smith, le lateloa ke Nguyen, Williams, Brown le Wilson. 