Declension table of ?mahāgaya

Masculine	Singular	Dual	Plural
Nominative	mahāgayaḥ	mahāgayau	mahāgayāḥ
Vocative	mahāgaya	mahāgayau	mahāgayāḥ
Accusative	mahāgayam	mahāgayau	mahāgayān
Instrumental	mahāgayena	mahāgayābhyām	mahāgayaiḥ mahāgayebhiḥ
Dative	mahāgayāya	mahāgayābhyām	mahāgayebhyaḥ
Ablative	mahāgayāt	mahāgayābhyām	mahāgayebhyaḥ
Genitive	mahāgayasya	mahāgayayoḥ	mahāgayānām
Locative	mahāgaye	mahāgayayoḥ	mahāgayeṣu

Compound mahāgaya -

Adverb -mahāgayam -mahāgayāt