Where does “*jьzkonъ” come from?
*jьzkonъ (Proto-Slavic) comes from Proto-Slavic jьz koni, from Proto-Slavic jьz, from Proto-Balto-Slavic iź, from Proto-Indo-European h₁eǵʰs — out.
*jьzkonъ (Proto-Slavic) comes from Proto-Slavic jьz koni, from Proto-Slavic jьz, from Proto-Balto-Slavic iź, from Proto-Indo-European h₁eǵʰs — out.