Pāṇini sūtras

In the Veda the ktvā also, as well as lyap, is substituted for tvā, after an Indeclinable compouud, other than one preceded by the Negative tañ

1. ktvāक्त्वा

   Part	Lexeme	Sandhi form	Meaning	Stem
   kक्	ktvāक्त्वा	ktvāक्त्वा	ktvāक्त्वा	ktvāक्त्वा

2. apiअपि

   Part	Lexeme	Sandhi form	Meaning	Stem
   aअ	apiअपि	apiअपि	besides	apiअपि

3. chandasiछन्दसि

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   cच्	chandasछन्दस्	chandasiछन्दसि	Veda	chandछन्द् + plus asiअसि

Anuvṛtti

1. ktvaḥक्त्वः 7·1·37

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   kक्	ktvāक्त्वा	ktvaḥक्त्वः	ktvāक्त्वा	ktvāक्त्वा + plus ḥः