Declension table of ?gartavya

Masculine	Singular	Dual	Plural
Nominative	gartavyaḥ	gartavyau	gartavyāḥ
Vocative	gartavya	gartavyau	gartavyāḥ
Accusative	gartavyam	gartavyau	gartavyān
Instrumental	gartavyena	gartavyābhyām	gartavyaiḥ gartavyebhiḥ
Dative	gartavyāya	gartavyābhyām	gartavyebhyaḥ
Ablative	gartavyāt	gartavyābhyām	gartavyebhyaḥ
Genitive	gartavyasya	gartavyayoḥ	gartavyānām
Locative	gartavye	gartavyayoḥ	gartavyeṣu

Compound gartavya -

Adverb -gartavyam -gartavyāt