Possibility \#9
Possibility #9¶
When a word ends in a long vowel and the next word begins with e,
e may be changed to ri and the long vowel shortened.
yathā
eva > yathariva
āe > ari
This means:
when a word ends in ā,
and the next word starts with e,
ā is shortened
and e becomes ri
In Kaccāyana this is called (22) ev’ādissa ri pubbo ca rasso.
sara-sandhi-niṭṭhitaṃ