Declension table of ?karvitavya

Neuter	Singular	Dual	Plural
Nominative	karvitavyam	karvitavye	karvitavyāni
Vocative	karvitavya	karvitavye	karvitavyāni
Accusative	karvitavyam	karvitavye	karvitavyāni
Instrumental	karvitavyena	karvitavyābhyām	karvitavyaiḥ
Dative	karvitavyāya	karvitavyābhyām	karvitavyebhyaḥ
Ablative	karvitavyāt	karvitavyābhyām	karvitavyebhyaḥ
Genitive	karvitavyasya	karvitavyayoḥ	karvitavyānām
Locative	karvitavye	karvitavyayoḥ	karvitavyeṣu

Compound karvitavya -

Adverb -karvitavyam -karvitavyāt