Declension table of ?sotavya

Masculine	Singular	Dual	Plural
Nominative	sotavyaḥ	sotavyau	sotavyāḥ
Vocative	sotavya	sotavyau	sotavyāḥ
Accusative	sotavyam	sotavyau	sotavyān
Instrumental	sotavyena	sotavyābhyām	sotavyaiḥ sotavyebhiḥ
Dative	sotavyāya	sotavyābhyām	sotavyebhyaḥ
Ablative	sotavyāt	sotavyābhyām	sotavyebhyaḥ
Genitive	sotavyasya	sotavyayoḥ	sotavyānām
Locative	sotavye	sotavyayoḥ	sotavyeṣu

Compound sotavya -

Adverb -sotavyam -sotavyāt