Declension table of ?sumahāvrata

Neuter	Singular	Dual	Plural
Nominative	sumahāvratam	sumahāvrate	sumahāvratāni
Vocative	sumahāvrata	sumahāvrate	sumahāvratāni
Accusative	sumahāvratam	sumahāvrate	sumahāvratāni
Instrumental	sumahāvratena	sumahāvratābhyām	sumahāvrataiḥ
Dative	sumahāvratāya	sumahāvratābhyām	sumahāvratebhyaḥ
Ablative	sumahāvratāt	sumahāvratābhyām	sumahāvratebhyaḥ
Genitive	sumahāvratasya	sumahāvratayoḥ	sumahāvratānām
Locative	sumahāvrate	sumahāvratayoḥ	sumahāvrateṣu

Compound sumahāvrata -

Adverb -sumahāvratam -sumahāvratāt