Declension table of ?pūrvasamudra

Masculine	Singular	Dual	Plural
Nominative	pūrvasamudraḥ	pūrvasamudrau	pūrvasamudrāḥ
Vocative	pūrvasamudra	pūrvasamudrau	pūrvasamudrāḥ
Accusative	pūrvasamudram	pūrvasamudrau	pūrvasamudrān
Instrumental	pūrvasamudreṇa	pūrvasamudrābhyām	pūrvasamudraiḥ pūrvasamudrebhiḥ
Dative	pūrvasamudrāya	pūrvasamudrābhyām	pūrvasamudrebhyaḥ
Ablative	pūrvasamudrāt	pūrvasamudrābhyām	pūrvasamudrebhyaḥ
Genitive	pūrvasamudrasya	pūrvasamudrayoḥ	pūrvasamudrāṇām
Locative	pūrvasamudre	pūrvasamudrayoḥ	pūrvasamudreṣu

Compound pūrvasamudra -

Adverb -pūrvasamudram -pūrvasamudrāt