Pāṇini sūtras

The substitution of ava for the o of go in compulsory when a vowel to be found in the word indra follows it.

German Auch vor indra findet diese Substitution statt. (124)

1. indreइन्द्रे

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   iइ	indraइन्द्र	indreइन्द्रे	indra [word]	indrइन्द्र् + plus eए

2. caच

   Part	Lexeme	Sandhi form	Meaning	Stem
   cच्	caच	caच	besides	caच

3. nityamनित्यम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   nन्	nityaनित्य	nityamनित्यम्	continuous	nityनित्य् + plus amअम्

Anuvṛtti

1. saṃhitāyāmसंहितायाम् 6·1·72

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   sस्	saṃhitāसंहिता	saṃhitāyāmसंहितायाम्	continuous speech	saṃhitसंहित् + plus āyआय्

2. ya+ṇ+a+ciय+ण्+अ+चि 6·1·77

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	akāraअकार	aअ
   cच्	cच्	ciचि	CC	cच् + plus iइ

3. prakṛtyāप्रकृत्या 6·1·115

   Part	Lexeme	Sandhi form	Stem + termination
   pप्	prakṛtiप्रकृति	prakṛtyāप्रकृत्या	prakṛtप्रकृत् + plus yāया

4. goḥगोः 6·1·122

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   gग्	goगो	goḥगोः	go [word]	goगो + plus ḥः

5. avaṅअवङ् 6·1·123

   Part	Lexeme	Sandhi form	Meaning	Stem
   aअ	avaṅअवङ्	avaṅअवङ्	avaṅअवङ्	avaṅअवङ्