Declension table of ?mahāvasa

Masculine	Singular	Dual	Plural
Nominative	mahāvasaḥ	mahāvasau	mahāvasāḥ
Vocative	mahāvasa	mahāvasau	mahāvasāḥ
Accusative	mahāvasam	mahāvasau	mahāvasān
Instrumental	mahāvasena	mahāvasābhyām	mahāvasaiḥ mahāvasebhiḥ
Dative	mahāvasāya	mahāvasābhyām	mahāvasebhyaḥ
Ablative	mahāvasāt	mahāvasābhyām	mahāvasebhyaḥ
Genitive	mahāvasasya	mahāvasayoḥ	mahāvasānām
Locative	mahāvase	mahāvasayoḥ	mahāvaseṣu

Compound mahāvasa -

Adverb -mahāvasam -mahāvasāt