Declension table of ?sumahātyaya

Neuter	Singular	Dual	Plural
Nominative	sumahātyayam	sumahātyaye	sumahātyayāni
Vocative	sumahātyaya	sumahātyaye	sumahātyayāni
Accusative	sumahātyayam	sumahātyaye	sumahātyayāni
Instrumental	sumahātyayena	sumahātyayābhyām	sumahātyayaiḥ
Dative	sumahātyayāya	sumahātyayābhyām	sumahātyayebhyaḥ
Ablative	sumahātyayāt	sumahātyayābhyām	sumahātyayebhyaḥ
Genitive	sumahātyayasya	sumahātyayayoḥ	sumahātyayānām
Locative	sumahātyaye	sumahātyayayoḥ	sumahātyayeṣu

Compound sumahātyaya -

Adverb -sumahātyayam -sumahātyayāt