Declension table of ?tumbura

Neuter	Singular	Dual	Plural
Nominative	tumburam	tumbure	tumburāṇi
Vocative	tumbura	tumbure	tumburāṇi
Accusative	tumburam	tumbure	tumburāṇi
Instrumental	tumbureṇa	tumburābhyām	tumburaiḥ
Dative	tumburāya	tumburābhyām	tumburebhyaḥ
Ablative	tumburāt	tumburābhyām	tumburebhyaḥ
Genitive	tumburasya	tumburayoḥ	tumburāṇām
Locative	tumbure	tumburayoḥ	tumbureṣu

Compound tumbura -

Adverb -tumburam -tumburāt