Pāṇini sūtras

Before a Taddhita affix having an indicatory ñ, ṇ or k, the Vṛiddhi is substituted for the first vowels of both members a Dvanda compound of the names of Devas.

1. devatā+dvandveदेवता+द्वन्द्वे

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   dद्	devatāदेवता	devatāदेवता	Hindu deity	devatदेवत् + plus āआ
   dद्	dvaṃdvaद्वंद्व	dvandveद्वन्द्वे	DvaṃdvaDवंद्व	dvaṃdvद्वंद्व् + plus eए

2. caच

   Part	Lexeme	Sandhi form	Meaning	Stem
   cच्	caच	caच	besides	caच

Anuvṛtti

1. uttara+padasyaउत्तर+पदस्य 7·3·10

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   uउ	uttaraउत्तर	uttaraउत्तर	following	uttarउत्तर् + plus aअ
   pप्	padaपद	padasyaपदस्य	word	padपद् + plus asyaअस्य

2. pūrva+padasyaपूर्व+पदस्य 7·3·19

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	pūrvaपूर्व	pūrvaपूर्व	antecedent	pūrvaपूर्व
   pप्	padaपद	padasyaपदस्य	word	padपद् + plus asyaअस्य