Declension table of ?mahāvratin

Neuter	Singular	Dual	Plural
Nominative	mahāvrati	mahāvratinī	mahāvratīni
Vocative	mahāvratin mahāvrati	mahāvratinī	mahāvratīni
Accusative	mahāvrati	mahāvratinī	mahāvratīni
Instrumental	mahāvratinā	mahāvratibhyām	mahāvratibhiḥ
Dative	mahāvratine	mahāvratibhyām	mahāvratibhyaḥ
Ablative	mahāvratinaḥ	mahāvratibhyām	mahāvratibhyaḥ
Genitive	mahāvratinaḥ	mahāvratinoḥ	mahāvratinām
Locative	mahāvratini	mahāvratinoḥ	mahāvratiṣu

Compound mahāvrati -

Adverb -mahāvrati