<prompt> Kalima dǝwo dǝga samnozǝyin: Constantin dǝye kuru medal tulurye suwudǝna suro ICF Canoe Sprint World Championships dǝlan, shi dǝwo kunkunzǝ K-2 500 m: 1977 kuru bronze tulur K-2 500 m:  <response>: 1978, 1979, 1981; K-4 500 m: 1974, 1978, 1979, 1983. 