Pāṇini sūtras

Guṇa is substituted for the final ṛ of the root ṛ (arti) and in those roots, ending in short ṛ, in which the vowel is preceded by a conjunct consonant, when the Intensive character yaṅ follows.

1. yaṅiयङि

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   yय्	yaṅयङ्	yaṅiयङि	intensive ending	yaṅयङ् + plus iइ

2. caच

   Part	Lexeme	Sandhi form	Meaning	Stem
   cच्	caच	caच	besides	caच

Anuvṛtti

1. ṛ+taḥऋ+तः 7·4·27

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   ṛऋ	ṛऋ	ṛऋ	ṛkāraऋकार	ṛऋ
   tत्	tत्	taḥतः	TT	tत् + plus aḥअः

2. arti+saṃyoga+ādyoḥअर्ति+संयोग+आद्योः 7·4·29

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	artiअर्ति	artiअर्ति	ṛऋ	artअर्त् + plus iइ
   sस्	saṃyogaसंयोग	saṃyogaसंयोग	saṃyogaसंयोग	saṃyogसंयोग् + plus aअ
   āआ	ādiआदि	ādyoḥआद्योः	first syllable	ādआद् + plus yoḥयोः