<prompt> Pedzisa mutsara unotevera: Kreft akawanawo menduru dzesirivha nomwe paICF Canoe Sprint World Championships mbiri muK-1 500 m 1975, 1979, imwe muK-2 500 m 1975, uye ina muK-4 500 m zviitiko 1974,  <response>: 1975, 1979, 1983. 