Declension table of ?sayitavya

Neuter	Singular	Dual	Plural
Nominative	sayitavyam	sayitavye	sayitavyāni
Vocative	sayitavya	sayitavye	sayitavyāni
Accusative	sayitavyam	sayitavye	sayitavyāni
Instrumental	sayitavyena	sayitavyābhyām	sayitavyaiḥ
Dative	sayitavyāya	sayitavyābhyām	sayitavyebhyaḥ
Ablative	sayitavyāt	sayitavyābhyām	sayitavyebhyaḥ
Genitive	sayitavyasya	sayitavyayoḥ	sayitavyānām
Locative	sayitavye	sayitavyayoḥ	sayitavyeṣu

Compound sayitavya -

Adverb -sayitavyam -sayitavyāt