Declension table of ?hayitavya

Neuter	Singular	Dual	Plural
Nominative	hayitavyam	hayitavye	hayitavyāni
Vocative	hayitavya	hayitavye	hayitavyāni
Accusative	hayitavyam	hayitavye	hayitavyāni
Instrumental	hayitavyena	hayitavyābhyām	hayitavyaiḥ
Dative	hayitavyāya	hayitavyābhyām	hayitavyebhyaḥ
Ablative	hayitavyāt	hayitavyābhyām	hayitavyebhyaḥ
Genitive	hayitavyasya	hayitavyayoḥ	hayitavyānām
Locative	hayitavye	hayitavyayoḥ	hayitavyeṣu

Compound hayitavya -

Adverb -hayitavyam -hayitavyāt