Declension table of bhavitavya

Masculine	Singular	Dual	Plural
Nominative	bhavitavyaḥ	bhavitavyau	bhavitavyāḥ
Vocative	bhavitavya	bhavitavyau	bhavitavyāḥ
Accusative	bhavitavyam	bhavitavyau	bhavitavyān
Instrumental	bhavitavyena	bhavitavyābhyām	bhavitavyaiḥ bhavitavyebhiḥ
Dative	bhavitavyāya	bhavitavyābhyām	bhavitavyebhyaḥ
Ablative	bhavitavyāt	bhavitavyābhyām	bhavitavyebhyaḥ
Genitive	bhavitavyasya	bhavitavyayoḥ	bhavitavyānām
Locative	bhavitavye	bhavitavyayoḥ	bhavitavyeṣu

Compound bhavitavya -

Adverb -bhavitavyam -bhavitavyāt