Declension table of ?tumbya

Neuter	Singular	Dual	Plural
Nominative	tumbyam	tumbye	tumbyāni
Vocative	tumbya	tumbye	tumbyāni
Accusative	tumbyam	tumbye	tumbyāni
Instrumental	tumbyena	tumbyābhyām	tumbyaiḥ
Dative	tumbyāya	tumbyābhyām	tumbyebhyaḥ
Ablative	tumbyāt	tumbyābhyām	tumbyebhyaḥ
Genitive	tumbyasya	tumbyayoḥ	tumbyānām
Locative	tumbye	tumbyayoḥ	tumbyeṣu

Compound tumbya -

Adverb -tumbyam -tumbyāt