Where does “отыз бір” come from?

отыз бір (Kazakh) comes from Kazakh бір, from Old East Slavic боръ, from Proto-Slavic borъ, from Proto-Balto-Slavic barús, from Proto-Indo-European bʰor- — to hum, buzz; coniferous forest; to protrude;...

отыз бір (Kazakh): thirty-one

Definitions

thirty-one

Ancestry of “отыз бір”, step by step

отыз бір traces back through two separate lines of ancestry.

via Kazakh бір

Step	Language	Word	Meaning
1	Kazakh	бір	one
2	Old East Slavic	боръ	—
3	Proto-Slavic	borъ	pine tree; set, assembly; loot
4	Proto-Balto-Slavic	barús	—
5	Proto-Indo-European	bʰor-	to hum, buzz; coniferous forest; to protrude;...

via Kazakh отыз

Step	Language	Word	Meaning
1	Kazakh	отыз	thirty
2	Proto-Turkic	otuŕ	thirty

Every word from Proto-Indo-European bʰor- →Every word from Proto-Balto-Slavic barús →Every word from Proto-Slavic borъ →