Declension table of ?vatsin

Neuter	Singular	Dual	Plural
Nominative	vatsi	vatsinī	vatsīni
Vocative	vatsin vatsi	vatsinī	vatsīni
Accusative	vatsi	vatsinī	vatsīni
Instrumental	vatsinā	vatsibhyām	vatsibhiḥ
Dative	vatsine	vatsibhyām	vatsibhyaḥ
Ablative	vatsinaḥ	vatsibhyām	vatsibhyaḥ
Genitive	vatsinaḥ	vatsinoḥ	vatsinām
Locative	vatsini	vatsinoḥ	vatsiṣu

Compound vatsi -

Adverb -vatsi