Declension table of pūrvavat

Masculine	Singular	Dual	Plural
Nominative	pūrvavān	pūrvavantau	pūrvavantaḥ
Vocative	pūrvavan	pūrvavantau	pūrvavantaḥ
Accusative	pūrvavantam	pūrvavantau	pūrvavataḥ
Instrumental	pūrvavatā	pūrvavadbhyām	pūrvavadbhiḥ
Dative	pūrvavate	pūrvavadbhyām	pūrvavadbhyaḥ
Ablative	pūrvavataḥ	pūrvavadbhyām	pūrvavadbhyaḥ
Genitive	pūrvavataḥ	pūrvavatoḥ	pūrvavatām
Locative	pūrvavati	pūrvavatoḥ	pūrvavatsu

Compound pūrvavat -

Adverb -pūrvavantam