Declension table of ?tartavya

Masculine	Singular	Dual	Plural
Nominative	tartavyaḥ	tartavyau	tartavyāḥ
Vocative	tartavya	tartavyau	tartavyāḥ
Accusative	tartavyam	tartavyau	tartavyān
Instrumental	tartavyena	tartavyābhyām	tartavyaiḥ tartavyebhiḥ
Dative	tartavyāya	tartavyābhyām	tartavyebhyaḥ
Ablative	tartavyāt	tartavyābhyām	tartavyebhyaḥ
Genitive	tartavyasya	tartavyayoḥ	tartavyānām
Locative	tartavye	tartavyayoḥ	tartavyeṣu

Compound tartavya -

Adverb -tartavyam -tartavyāt