Pāṇini sūtras

A kṛit affix, coming after a verb, which begins with a consonant and has a penultimate ic vowel, changes optionally its n, which is preceded by a vowel, into ṇ, when it comes after an upasarga having a cause of change.

1. ha+laḥ+ca+i+c+upadhātह+लः+च+इ+च्+उपधात्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   hह्	haह	haह	hakāraहकार	hह् + plus aअ
   lल्	lल्	laḥलः	LL	lल् + plus aḥअः
   cच्	caच	caच	besides	caच
   iइ	iइ	iइ	ikāraइकार	iइ
   cच्	cच्	cच्	CC	cच्
   uउ	upadhāउपधा	upadhātउपधात्	penult	upadhउपध् + plus ātआत्

Anuvṛtti

1. ra+ṣābhyāmर+षाभ्याम् 8·4·1

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   rर्	raर	raर	rakāraरकार	rर् + plus aअ
   ṣष्	ṣaष	ṣābhyāmषाभ्याम्	ṣakāraषकार	ṣष् + plus ābhy&आभ्य्&

2. a+ṭ+ku+pu+āṅ+num+vyavāyeअ+ट्+कु+पु+आङ्+नुम्+व्यवाये 8·4·2

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	akāraअकार	aअ
   ṭट्	ṭट्	ṭट्	ṬṬ	ṭट्
   kक्	kuकु	kuकु	guttural	kक् + plus uउ
   pप्	puपु	puपु	labial consonant	pप् + plus uउ
   āआ	āṅआङ्	āṅआङ्	āआ	āṅआङ्
   nन्	numनुम्	numनुम्	numनुम्	numनुम्
   vव्	vyavāyaव्यवाय	vyavāyeव्यवाये	interposition	vyavāyव्यवाय् + plus eए

3. upasargātउपसर्गात् 8·4·28

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   uउ	upasargaउपसर्ग	upasargātउपसर्गात्	preposition	upasargउपसर्ग् + plus ātआत्

4. a+caḥअ+चः 8·4·29

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	akāraअकार	aअ
   cच्	cच्	caḥचः	CC	cच् + plus aḥअः

5. vibhāṣāविभाषा 8·4·30

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   vव्	vibhāṣविभाष्	vibhāṣāविभाषा	option	vibhāṣविभाष् + plus āआ