Proto-Uralic *kakta

→ Eastern Mari кок (inherited)

→ Finnish kaksi (inherited)

→ Ingrian kaks (inherited)

→ Komi-Permyak кык (inherited)

→ Komi-Zyrian кык (inherited)

→ Livonian kakš (mention)

→ Erzya кавто (inherited)

→ Kildin Sami кӯһт (inherited)

→ Ter Sami kïkkʹtʹ (inherited)

→ Udmurt кык (inherited)