→
Bulgarian блясък (inherited)→
Czech blesk (inherited)→
Upper Sorbian błysk (inherited)→
Macedonian блесок (inherited)→
Polish błysk (inherited)→
Polish blask (inherited)→
Russian блеск (inherited)→
Serbo-Croatian blesak (inherited)→
Serbo-Croatian блесак (inherited)→
Serbo-Croatian бљесак (inherited)→
Serbo-Croatian bljesak (inherited)