Pāṇini sūtras

The first member has acute on the first syllable before the word nagara, but not when it is the word mahat or nava, nor when it refers to a city in the lands of the Northern People.

1. a+mahat+navamअ+महत्+नवम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	not	aअ
   mम्	mahatमहत्	mahatमहत्	mahant [word]	mahमह् + plus atअत्
   nन्	navaनव	navamनवम्	nava [word]	navनव् + plus amअम्

2. nagareनगरे

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   nन्	nagaraनगर	nagareनगरे	nagara [word]	nagarनगर् + plus eए

3. an+udīcāmअन्+उदीचाम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	naन	anअन्	not	naन
   uउ	udañcउदञ्च्	udīcāmउदीचाम्	northern	udउद् + plus īcईच्

Anuvṛtti

1. pūrva+padamपूर्व+पदम् 6·2·1

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	pūrvaपूर्व	pūrvaपूर्व	antecedent	pūrvaपूर्व
   pप्	padaपद	padamपदम्	word	padपद् + plus amअम्

2. udāttaḥउदात्तः 6·2·64

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   uउ	udāttaउदात्त	udāttaḥउदात्तः	udāttaउदात्त	udāttउदात्त् + plus aḥअः