Declension table of ?mahākanya

Masculine	Singular	Dual	Plural
Nominative	mahākanyaḥ	mahākanyau	mahākanyāḥ
Vocative	mahākanya	mahākanyau	mahākanyāḥ
Accusative	mahākanyam	mahākanyau	mahākanyān
Instrumental	mahākanyena	mahākanyābhyām	mahākanyaiḥ mahākanyebhiḥ
Dative	mahākanyāya	mahākanyābhyām	mahākanyebhyaḥ
Ablative	mahākanyāt	mahākanyābhyām	mahākanyebhyaḥ
Genitive	mahākanyasya	mahākanyayoḥ	mahākanyānām
Locative	mahākanye	mahākanyayoḥ	mahākanyeṣu

Compound mahākanya -

Adverb -mahākanyam -mahākanyāt