Declension table of ?mahānvaya

Neuter	Singular	Dual	Plural
Nominative	mahānvayam	mahānvaye	mahānvayāni
Vocative	mahānvaya	mahānvaye	mahānvayāni
Accusative	mahānvayam	mahānvaye	mahānvayāni
Instrumental	mahānvayena	mahānvayābhyām	mahānvayaiḥ
Dative	mahānvayāya	mahānvayābhyām	mahānvayebhyaḥ
Ablative	mahānvayāt	mahānvayābhyām	mahānvayebhyaḥ
Genitive	mahānvayasya	mahānvayayoḥ	mahānvayānām
Locative	mahānvaye	mahānvayayoḥ	mahānvayeṣu

Compound mahānvaya -

Adverb -mahānvayam -mahānvayāt