Where does “čьrvьjь” come from?
čьrvьjь (Proto-Slavic) comes from Proto-Slavic čьrvь, from Proto-Balto-Slavic kírmis, from Proto-Indo-European kʷŕ̥mis — worm.
čьrvьjь (Proto-Slavic) comes from Proto-Slavic čьrvь, from Proto-Balto-Slavic kírmis, from Proto-Indo-European kʷŕ̥mis — worm.