@some A verb bases

The /kryAdi root lU लू makes the verbbase **lunA- लुनाॱ . This A आ becomes I ई by IhalyaghoH before consonant /kGit /tiG,

**lunIte लुनीते

and disappears by znAbhyastayor... before a vowel /kGit /tiG such as ate अते —

**lunate लुनते

The A आ of /ghu roots disappears too — ineed the A आ of all /juhotyAdi, by znAbhyastayor...

dadA- ददाॱ + /jhi
→ dA दा + ati अति by adabhyastAt
→ **dadA- ददाॱ + ati अति
→ dad- दद् + ati अति by znAbhyastayor...
→ !**dadati ददति "they give"

dadhA- दधाॱ + /jhi → !**dadhati दधति "they put", same steps

And from *jahA "quit" —

**jahAti जहाति "he quits"

**jahati जहति "they quit"