/as / अस्

The /adAdi root /as has the present /asti "there is". (Not same as root /as', present /asyati "throws").

/as "be there" + /laT /tip → !**asti अस्ति "there is"

This root is called /asti in some sUtras, such as astisicopRkte, so as to avoid confusion with /asyati.

udyAne sarpo 'sti उद्याने सर्पो ऽस्ति "there is a snake in the garden"

caitrasya gaur asti चैत्रस्य गौरस्ति "of Caitra there is a cow", "caitra चैत्र has a cow"

AsId rAjA nalo nAma आसीद्राजा नलो नाम "(Once upon a time,) there was a king, Nala by name"

This verb is often omitted —

udyAne sarpaH उद्याने सर्पः "there is a snake in the garden"

caitrasya gauH चैत्रस्य गौः "of Caitra there is a cow", "caitra चैत्र has a cow"

These are some forms of the present of /as —

/as + /laT /mip
→ !**asmi अस्मि "am", "here I am"

/as loses s स् by tAsastyorlop...

and loses a अ by znasorallopaH