Declension table of ?sādayitavya

Neuter	Singular	Dual	Plural
Nominative	sādayitavyam	sādayitavye	sādayitavyāni
Vocative	sādayitavya	sādayitavye	sādayitavyāni
Accusative	sādayitavyam	sādayitavye	sādayitavyāni
Instrumental	sādayitavyena	sādayitavyābhyām	sādayitavyaiḥ
Dative	sādayitavyāya	sādayitavyābhyām	sādayitavyebhyaḥ
Ablative	sādayitavyāt	sādayitavyābhyām	sādayitavyebhyaḥ
Genitive	sādayitavyasya	sādayitavyayoḥ	sādayitavyānām
Locative	sādayitavye	sādayitavyayoḥ	sādayitavyeṣu

Compound sādayitavya -

Adverb -sādayitavyam -sādayitavyāt