Declension table of ?sāyayitavya

Neuter	Singular	Dual	Plural
Nominative	sāyayitavyam	sāyayitavye	sāyayitavyāni
Vocative	sāyayitavya	sāyayitavye	sāyayitavyāni
Accusative	sāyayitavyam	sāyayitavye	sāyayitavyāni
Instrumental	sāyayitavyena	sāyayitavyābhyām	sāyayitavyaiḥ
Dative	sāyayitavyāya	sāyayitavyābhyām	sāyayitavyebhyaḥ
Ablative	sāyayitavyāt	sāyayitavyābhyām	sāyayitavyebhyaḥ
Genitive	sāyayitavyasya	sāyayitavyayoḥ	sāyayitavyānām
Locative	sāyayitavye	sāyayitavyayoḥ	sāyayitavyeṣu

Compound sāyayitavya -

Adverb -sāyayitavyam -sāyayitavyāt