Declension table of ?yāvayitavya

Masculine	Singular	Dual	Plural
Nominative	yāvayitavyaḥ	yāvayitavyau	yāvayitavyāḥ
Vocative	yāvayitavya	yāvayitavyau	yāvayitavyāḥ
Accusative	yāvayitavyam	yāvayitavyau	yāvayitavyān
Instrumental	yāvayitavyena	yāvayitavyābhyām	yāvayitavyaiḥ yāvayitavyebhiḥ
Dative	yāvayitavyāya	yāvayitavyābhyām	yāvayitavyebhyaḥ
Ablative	yāvayitavyāt	yāvayitavyābhyām	yāvayitavyebhyaḥ
Genitive	yāvayitavyasya	yāvayitavyayoḥ	yāvayitavyānām
Locative	yāvayitavye	yāvayitavyayoḥ	yāvayitavyeṣu

Compound yāvayitavya -

Adverb -yāvayitavyam -yāvayitavyāt