Declension table of ?chyavya

Neuter	Singular	Dual	Plural
Nominative	chyavyam	chyavye	chyavyāni
Vocative	chyavya	chyavye	chyavyāni
Accusative	chyavyam	chyavye	chyavyāni
Instrumental	chyavyena	chyavyābhyām	chyavyaiḥ
Dative	chyavyāya	chyavyābhyām	chyavyebhyaḥ
Ablative	chyavyāt	chyavyābhyām	chyavyebhyaḥ
Genitive	chyavyasya	chyavyayoḥ	chyavyānām
Locative	chyavye	chyavyayoḥ	chyavyeṣu

Compound chyavya -

Adverb -chyavyam -chyavyāt