-би

Compare Kalmyk -в (-v) and Mongolian би (bi).

-би • (-bi)

1. First-person singular predicative suffix, used after a consonant.

   Би буряадби. ― Bi burjaadbi. ― I’m a Buryat.

   Украинада түрэһэмби. ― Ukrainada türehembi. ― I was born in Ukraine.

• -б (-b, first-person singular predicative suffix used after a vowel)
• би (bi, “I”, first-person singular subject pronoun)