Pāṇini sūtras

After bahu, the augment yaṭ is added to iṣṭha, and bhū replaces bahu

German erhält nach diesem Abfall und dieser Substitution das Augment yi. (159)

1. iṣṭhasyaइष्ठस्य

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   iइ	iṣṭhanइष्ठन्	iṣṭhasyaइष्ठस्य	iṣṭhanइष्ठन्	iṣṭhइष्ठ् + plus asyaअस्य

2. yiṭयिट्

   Part	Lexeme	Sandhi form	Meaning	Stem
   yय्	yiṭयिट्	yiṭयिट्	yiṭयिट्	yiṭयिट्

3. caच

   Part	Lexeme	Sandhi form	Meaning	Stem
   cच्	caच	caच	besides	caच

Anuvṛtti

1. bhātभात् 6·4·22

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bhaभ	bhātभात्	bhaभ	bhभ् + plus ātआत्

2. bhasyaभस्य 6·4·129

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bhaभ	bhasyaभस्य	bhaभ	bhभ् + plus asyaअस्य

3. iṣṭha+ima+īyassuइष्ठ+इम+ईयस्सु 6·4·154

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   iइ	iṣṭhanइष्ठन्	iṣṭhaइष्ठ	iṣṭhanइष्ठन्	iṣṭhइष्ठ् + plus aअ
   iइ	imanइमन्	imaइम	imanic	imइम् + plus aअ
   īई	īyasईयस्	īyassuईयस्सु	īyasunईयसुन्	īyasईयस् + plus suसु

4. bahoḥबहोः 6·4·158

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   bब्	bahuबहु	bahoḥबहोः	bahu [word]	bahबह् + plus oḥओः