Declension table of ?tayitavya

Neuter	Singular	Dual	Plural
Nominative	tayitavyam	tayitavye	tayitavyāni
Vocative	tayitavya	tayitavye	tayitavyāni
Accusative	tayitavyam	tayitavye	tayitavyāni
Instrumental	tayitavyena	tayitavyābhyām	tayitavyaiḥ
Dative	tayitavyāya	tayitavyābhyām	tayitavyebhyaḥ
Ablative	tayitavyāt	tayitavyābhyām	tayitavyebhyaḥ
Genitive	tayitavyasya	tayitavyayoḥ	tayitavyānām
Locative	tayitavye	tayitavyayoḥ	tayitavyeṣu

Compound tayitavya -

Adverb -tayitavyam -tayitavyāt