Where does “gъr-t-” come from?
gъr-t- (Proto-Slavic) comes from Proto-Slavic gъrtati, from Proto-Indo-European h₂ger- — to gather; flock, herd.
gъr-t- (Proto-Slavic) comes from Proto-Slavic gъrtati, from Proto-Indo-European h₂ger- — to gather; flock, herd.