Declension table of ?yantavya

Masculine	Singular	Dual	Plural
Nominative	yantavyaḥ	yantavyau	yantavyāḥ
Vocative	yantavya	yantavyau	yantavyāḥ
Accusative	yantavyam	yantavyau	yantavyān
Instrumental	yantavyena	yantavyābhyām	yantavyaiḥ yantavyebhiḥ
Dative	yantavyāya	yantavyābhyām	yantavyebhyaḥ
Ablative	yantavyāt	yantavyābhyām	yantavyebhyaḥ
Genitive	yantavyasya	yantavyayoḥ	yantavyānām
Locative	yantavye	yantavyayoḥ	yantavyeṣu

Compound yantavya -

Adverb -yantavyam -yantavyāt