Declension table of ?sumara

Neuter	Singular	Dual	Plural
Nominative	sumaram	sumare	sumarāṇi
Vocative	sumara	sumare	sumarāṇi
Accusative	sumaram	sumare	sumarāṇi
Instrumental	sumareṇa	sumarābhyām	sumaraiḥ
Dative	sumarāya	sumarābhyām	sumarebhyaḥ
Ablative	sumarāt	sumarābhyām	sumarebhyaḥ
Genitive	sumarasya	sumarayoḥ	sumarāṇām
Locative	sumare	sumarayoḥ	sumareṣu

Compound sumara -

Adverb -sumaram -sumarāt