Declension table of ?prāvayitavya

Neuter	Singular	Dual	Plural
Nominative	prāvayitavyam	prāvayitavye	prāvayitavyāni
Vocative	prāvayitavya	prāvayitavye	prāvayitavyāni
Accusative	prāvayitavyam	prāvayitavye	prāvayitavyāni
Instrumental	prāvayitavyena	prāvayitavyābhyām	prāvayitavyaiḥ
Dative	prāvayitavyāya	prāvayitavyābhyām	prāvayitavyebhyaḥ
Ablative	prāvayitavyāt	prāvayitavyābhyām	prāvayitavyebhyaḥ
Genitive	prāvayitavyasya	prāvayitavyayoḥ	prāvayitavyānām
Locative	prāvayitavye	prāvayitavyayoḥ	prāvayitavyeṣu

Compound prāvayitavya -

Adverb -prāvayitavyam -prāvayitavyāt