Declension table of ?dhvanayitavya

Neuter	Singular	Dual	Plural
Nominative	dhvanayitavyam	dhvanayitavye	dhvanayitavyāni
Vocative	dhvanayitavya	dhvanayitavye	dhvanayitavyāni
Accusative	dhvanayitavyam	dhvanayitavye	dhvanayitavyāni
Instrumental	dhvanayitavyena	dhvanayitavyābhyām	dhvanayitavyaiḥ
Dative	dhvanayitavyāya	dhvanayitavyābhyām	dhvanayitavyebhyaḥ
Ablative	dhvanayitavyāt	dhvanayitavyābhyām	dhvanayitavyebhyaḥ
Genitive	dhvanayitavyasya	dhvanayitavyayoḥ	dhvanayitavyānām
Locative	dhvanayitavye	dhvanayitavyayoḥ	dhvanayitavyeṣu

Compound dhvanayitavya -

Adverb -dhvanayitavyam -dhvanayitavyāt