Pāṇini sūtras

ai is placed before the y of nyagrodha, instead of Vṛiddhi, when the word stands alone, and is not a member of a compound, and is followed by a Taddhita affix with the indicatory ñ, ṇ or k

1. nyagrodhasyaन्यग्रोधस्य

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   nन्	nyagrodhaन्यग्रोध	nyagrodhasyaन्यग्रोधस्य	nyagrodha [word]	nyagrodhन्यग्रोध् + plus asyaअस्य

2. caच

   Part	Lexeme	Sandhi form	Meaning	Stem
   cच्	caच	caच	besides	caच

3. kevalasyaकेवलस्य

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   kक्	kevalaकेवल	kevalasyaकेवलस्य	alone(p)	kevalकेवल् + plus asyaअस्य

Anuvṛtti

1. ai+cऐ+च् 7·3·3

   Part	Lexeme	Sandhi form	Meaning	Stem
   aअ	aiऐ	aiऐ	aikāraऐकार	aiऐ
   cच्	cच्	cच्	CC	cच्