deriv LSK ETT STT aSTA ALPH OLDHOMEPAGE NEWHOMEPAGE

/su / सु

"su" is the singular /sup ending in the first line, /svaujas.

azva- अश्वॱ + /su → azvas अश्वस्

CAREFUL: the 7pl ending "sup" from list svaujasamauTch... is not called /su in sUtras, it is called /sup'.

azvA- अश्वाॱ + /sup' → azvAsu अश्वासु