Declension table of ?mahānāga

Masculine	Singular	Dual	Plural
Nominative	mahānāgaḥ	mahānāgau	mahānāgāḥ
Vocative	mahānāga	mahānāgau	mahānāgāḥ
Accusative	mahānāgam	mahānāgau	mahānāgān
Instrumental	mahānāgena	mahānāgābhyām	mahānāgaiḥ mahānāgebhiḥ
Dative	mahānāgāya	mahānāgābhyām	mahānāgebhyaḥ
Ablative	mahānāgāt	mahānāgābhyām	mahānāgebhyaḥ
Genitive	mahānāgasya	mahānāgayoḥ	mahānāgānām
Locative	mahānāge	mahānāgayoḥ	mahānāgeṣu

Compound mahānāga -

Adverb -mahānāgam -mahānāgāt