<prompt> Pedzisa mutsara unotevera: Constantin akawanawo menduru sere paICF Canoe Sprint World Championships nesirivha K-2 500 m: 1977 uye menduru nomwe K-2 500 m:  <response>: 1978, 1979, 1981; K-4 500 m: 1974, 1978, 1979, 1983. 