Declension table of ?dhartavya

Neuter	Singular	Dual	Plural
Nominative	dhartavyam	dhartavye	dhartavyāni
Vocative	dhartavya	dhartavye	dhartavyāni
Accusative	dhartavyam	dhartavye	dhartavyāni
Instrumental	dhartavyena	dhartavyābhyām	dhartavyaiḥ
Dative	dhartavyāya	dhartavyābhyām	dhartavyebhyaḥ
Ablative	dhartavyāt	dhartavyābhyām	dhartavyebhyaḥ
Genitive	dhartavyasya	dhartavyayoḥ	dhartavyānām
Locative	dhartavye	dhartavyayoḥ	dhartavyeṣu

Compound dhartavya -

Adverb -dhartavyam -dhartavyāt