Declension table of ?kārayitavya

Neuter	Singular	Dual	Plural
Nominative	kārayitavyam	kārayitavye	kārayitavyāni
Vocative	kārayitavya	kārayitavye	kārayitavyāni
Accusative	kārayitavyam	kārayitavye	kārayitavyāni
Instrumental	kārayitavyena	kārayitavyābhyām	kārayitavyaiḥ
Dative	kārayitavyāya	kārayitavyābhyām	kārayitavyebhyaḥ
Ablative	kārayitavyāt	kārayitavyābhyām	kārayitavyebhyaḥ
Genitive	kārayitavyasya	kārayitavyayoḥ	kārayitavyānām
Locative	kārayitavye	kārayitavyayoḥ	kārayitavyeṣu

Compound kārayitavya -

Adverb -kārayitavyam -kārayitavyāt