Declension table of ?tumbayitavya

Neuter	Singular	Dual	Plural
Nominative	tumbayitavyam	tumbayitavye	tumbayitavyāni
Vocative	tumbayitavya	tumbayitavye	tumbayitavyāni
Accusative	tumbayitavyam	tumbayitavye	tumbayitavyāni
Instrumental	tumbayitavyena	tumbayitavyābhyām	tumbayitavyaiḥ
Dative	tumbayitavyāya	tumbayitavyābhyām	tumbayitavyebhyaḥ
Ablative	tumbayitavyāt	tumbayitavyābhyām	tumbayitavyebhyaḥ
Genitive	tumbayitavyasya	tumbayitavyayoḥ	tumbayitavyānām
Locative	tumbayitavye	tumbayitavyayoḥ	tumbayitavyeṣu

Compound tumbayitavya -

Adverb -tumbayitavyam -tumbayitavyāt