Declension table of ?tāyitavya

Neuter	Singular	Dual	Plural
Nominative	tāyitavyam	tāyitavye	tāyitavyāni
Vocative	tāyitavya	tāyitavye	tāyitavyāni
Accusative	tāyitavyam	tāyitavye	tāyitavyāni
Instrumental	tāyitavyena	tāyitavyābhyām	tāyitavyaiḥ
Dative	tāyitavyāya	tāyitavyābhyām	tāyitavyebhyaḥ
Ablative	tāyitavyāt	tāyitavyābhyām	tāyitavyebhyaḥ
Genitive	tāyitavyasya	tāyitavyayoḥ	tāyitavyānām
Locative	tāyitavye	tāyitavyayoḥ	tāyitavyeṣu

Compound tāyitavya -

Adverb -tāyitavyam -tāyitavyāt