Declension table of ?tumbara

Neuter	Singular	Dual	Plural
Nominative	tumbaram	tumbare	tumbarāṇi
Vocative	tumbara	tumbare	tumbarāṇi
Accusative	tumbaram	tumbare	tumbarāṇi
Instrumental	tumbareṇa	tumbarābhyām	tumbaraiḥ
Dative	tumbarāya	tumbarābhyām	tumbarebhyaḥ
Ablative	tumbarāt	tumbarābhyām	tumbarebhyaḥ
Genitive	tumbarasya	tumbarayoḥ	tumbarāṇām
Locative	tumbare	tumbarayoḥ	tumbareṣu

Compound tumbara -

Adverb -tumbaram -tumbarāt