Declension table of ?mahāga

Neuter	Singular	Dual	Plural
Nominative	mahāgam	mahāge	mahāgāni
Vocative	mahāga	mahāge	mahāgāni
Accusative	mahāgam	mahāge	mahāgāni
Instrumental	mahāgena	mahāgābhyām	mahāgaiḥ
Dative	mahāgāya	mahāgābhyām	mahāgebhyaḥ
Ablative	mahāgāt	mahāgābhyām	mahāgebhyaḥ
Genitive	mahāgasya	mahāgayoḥ	mahāgānām
Locative	mahāge	mahāgayoḥ	mahāgeṣu

Compound mahāga -

Adverb -mahāgam -mahāgāt