Declension table of ?pūrvasāgara

Masculine	Singular	Dual	Plural
Nominative	pūrvasāgaraḥ	pūrvasāgarau	pūrvasāgarāḥ
Vocative	pūrvasāgara	pūrvasāgarau	pūrvasāgarāḥ
Accusative	pūrvasāgaram	pūrvasāgarau	pūrvasāgarān
Instrumental	pūrvasāgareṇa	pūrvasāgarābhyām	pūrvasāgaraiḥ pūrvasāgarebhiḥ
Dative	pūrvasāgarāya	pūrvasāgarābhyām	pūrvasāgarebhyaḥ
Ablative	pūrvasāgarāt	pūrvasāgarābhyām	pūrvasāgarebhyaḥ
Genitive	pūrvasāgarasya	pūrvasāgarayoḥ	pūrvasāgarāṇām
Locative	pūrvasāgare	pūrvasāgarayoḥ	pūrvasāgareṣu

Compound pūrvasāgara -

Adverb -pūrvasāgaram -pūrvasāgarāt