Declension table of ?mahāsamudra

Masculine	Singular	Dual	Plural
Nominative	mahāsamudraḥ	mahāsamudrau	mahāsamudrāḥ
Vocative	mahāsamudra	mahāsamudrau	mahāsamudrāḥ
Accusative	mahāsamudram	mahāsamudrau	mahāsamudrān
Instrumental	mahāsamudreṇa	mahāsamudrābhyām	mahāsamudraiḥ mahāsamudrebhiḥ
Dative	mahāsamudrāya	mahāsamudrābhyām	mahāsamudrebhyaḥ
Ablative	mahāsamudrāt	mahāsamudrābhyām	mahāsamudrebhyaḥ
Genitive	mahāsamudrasya	mahāsamudrayoḥ	mahāsamudrāṇām
Locative	mahāsamudre	mahāsamudrayoḥ	mahāsamudreṣu

Compound mahāsamudra -

Adverb -mahāsamudram -mahāsamudrāt