Declension table of ?darśayitavya

Neuter	Singular	Dual	Plural
Nominative	darśayitavyam	darśayitavye	darśayitavyāni
Vocative	darśayitavya	darśayitavye	darśayitavyāni
Accusative	darśayitavyam	darśayitavye	darśayitavyāni
Instrumental	darśayitavyena	darśayitavyābhyām	darśayitavyaiḥ
Dative	darśayitavyāya	darśayitavyābhyām	darśayitavyebhyaḥ
Ablative	darśayitavyāt	darśayitavyābhyām	darśayitavyebhyaḥ
Genitive	darśayitavyasya	darśayitavyayoḥ	darśayitavyānām
Locative	darśayitavye	darśayitavyayoḥ	darśayitavyeṣu

Compound darśayitavya -

Adverb -darśayitavyam -darśayitavyāt