<prompt> Pedzisa mutsara unotevera: Jiří Krejza aimbova muCzechoslovak-akaberekerwa muSwitzerland slalom canoeist uyo akakwikwidza kubva kutanga kwema1970 kusvika kutanga kwema1980. Akakunda menduru ina paICF Canoe Slalom World Championships negoridhe C-2: 1973 yeCzechoslovakia, sirivha mbiri C-2 timu: 1973 yeCzechoslovakia,  <response>: 1977 nokuda kweSwitzerland uye bronze Mixed C-2: 1971 nokuda kweCzechoslovakia. 