Declension table of ?dīdhayitavya

Neuter	Singular	Dual	Plural
Nominative	dīdhayitavyam	dīdhayitavye	dīdhayitavyāni
Vocative	dīdhayitavya	dīdhayitavye	dīdhayitavyāni
Accusative	dīdhayitavyam	dīdhayitavye	dīdhayitavyāni
Instrumental	dīdhayitavyena	dīdhayitavyābhyām	dīdhayitavyaiḥ
Dative	dīdhayitavyāya	dīdhayitavyābhyām	dīdhayitavyebhyaḥ
Ablative	dīdhayitavyāt	dīdhayitavyābhyām	dīdhayitavyebhyaḥ
Genitive	dīdhayitavyasya	dīdhayitavyayoḥ	dīdhayitavyānām
Locative	dīdhayitavye	dīdhayitavyayoḥ	dīdhayitavyeṣu

Compound dīdhayitavya -

Adverb -dīdhayitavyam -dīdhayitavyāt