Declension table of ?yāpayitavya

Neuter	Singular	Dual	Plural
Nominative	yāpayitavyam	yāpayitavye	yāpayitavyāni
Vocative	yāpayitavya	yāpayitavye	yāpayitavyāni
Accusative	yāpayitavyam	yāpayitavye	yāpayitavyāni
Instrumental	yāpayitavyena	yāpayitavyābhyām	yāpayitavyaiḥ
Dative	yāpayitavyāya	yāpayitavyābhyām	yāpayitavyebhyaḥ
Ablative	yāpayitavyāt	yāpayitavyābhyām	yāpayitavyebhyaḥ
Genitive	yāpayitavyasya	yāpayitavyayoḥ	yāpayitavyānām
Locative	yāpayitavye	yāpayitavyayoḥ	yāpayitavyeṣu

Compound yāpayitavya -

Adverb -yāpayitavyam -yāpayitavyāt