<prompt> Feleletša polelwana e latelago: O thopile sefoka sa gauta ka difofaneng tša moya kua  <response>: FIS Freestyle World Ski Championships ka 1986 kua Tignes. Kua FIS Freestyle World Ski Championships ka 1989 kua Oberjoch, o ile a ba wa bošupa ka di-aerials. 