Pāṇini sūtras

The affix tasil comes after pari and abhi also.

1. pari+abhibhyāmपरि+अभिभ्याम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	pariपरि	pariपरि	pariपरि	parपर् + plus iइ
   aअ	abhiअभि	abhibhyāmअभिभ्याम्	abhiअभि	abhअभ् + plus ibhyāइभ्या

2. caच

   Part	Lexeme	Sandhi form	Meaning	Stem
   cच्	caच	caच	besides	caच

Anuvṛtti

1. vibhaktiḥविभक्तिः 5·3·1

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   vव्	vibhaktiविभक्ति	vibhaktiḥविभक्तिः	declension	vibhaktविभक्त् + plus iḥइः

2. a+dvi+ādibhyaḥअ+द्वि+आदिभ्यः 5·3·2

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	not	aअ
   dद्	dviद्वि	dviद्वि	dvi [word]	dviद्वि
   āआ	ādiआदि	ādibhyaḥआदिभ्यः	beginning	ādआद् + plus ibhyãइभ्य̃

3. tasilतसिल् 5·3·7

   Part	Lexeme	Sandhi form	Meaning	Stem
   tत्	tasilतसिल्	tasilतसिल्	tasilतसिल्	tasilतसिल्