Pāṇini sūtras

The Parasmaipada ârdhadhâtuka affixes beginning with s do not get the augment iṭ after vṛt and the three roots that follow it.

1. naन

   Part	Lexeme	Sandhi form	Meaning	Stem
   nन्	naन	naन	not	naन

2. vṛdbhyaḥवृद्भ्यः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   vव्	vṛtवृत्	vṛdbhyaḥवृद्भ्यः	vṛtवृत्	vṛtवृत् + plus bhyaḥभ्यः

3. caturbhyaḥचतुर्भ्यः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   cच्	caturचतुर्	caturbhyaḥचतुर्भ्यः	four	caturचतुर् + plus bhyaḥभ्यः

Anuvṛtti

1. va+l+ādeḥव+ल्+आदेः 7·2·35

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   vव्	vaव	vaव	vakāraवकार	vव् + plus aअ
   lल्	lल्	lल्	LL	lल्
   āआ	ādiआदि	ādeḥआदेः	first syllable	ādआद् + plus eḥएः

2. seसे 7·2·57

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	saस	seसे	sakāraसकार	sस् + plus eए

3. parasmaipadeṣuपरस्मैपदेषु 7·2·58

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	parasmaipadaपरस्मैपद	parasmaipadeṣuपरस्मैपदेषु	active voice	parasmaipadपरस्मैपद् + plus eṣuएषु