Declension table of ?mahāsi

Masculine	Singular	Dual	Plural
Nominative	mahāsiḥ	mahāsī	mahāsayaḥ
Vocative	mahāse	mahāsī	mahāsayaḥ
Accusative	mahāsim	mahāsī	mahāsīn
Instrumental	mahāsinā	mahāsibhyām	mahāsibhiḥ
Dative	mahāsaye	mahāsibhyām	mahāsibhyaḥ
Ablative	mahāseḥ	mahāsibhyām	mahāsibhyaḥ
Genitive	mahāseḥ	mahāsyoḥ	mahāsīnām
Locative	mahāsau	mahāsyoḥ	mahāsiṣu

Compound mahāsi -

Adverb -mahāsi