Declension table of ?mahāsura

Masculine	Singular	Dual	Plural
Nominative	mahāsuraḥ	mahāsurau	mahāsurāḥ
Vocative	mahāsura	mahāsurau	mahāsurāḥ
Accusative	mahāsuram	mahāsurau	mahāsurān
Instrumental	mahāsureṇa	mahāsurābhyām	mahāsuraiḥ mahāsurebhiḥ
Dative	mahāsurāya	mahāsurābhyām	mahāsurebhyaḥ
Ablative	mahāsurāt	mahāsurābhyām	mahāsurebhyaḥ
Genitive	mahāsurasya	mahāsurayoḥ	mahāsurāṇām
Locative	mahāsure	mahāsurayoḥ	mahāsureṣu

Compound mahāsura -

Adverb -mahāsuram -mahāsurāt