Declension table of vyavāya

Masculine	Singular	Dual	Plural
Nominative	vyavāyaḥ	vyavāyau	vyavāyāḥ
Vocative	vyavāya	vyavāyau	vyavāyāḥ
Accusative	vyavāyam	vyavāyau	vyavāyān
Instrumental	vyavāyena	vyavāyābhyām	vyavāyaiḥ vyavāyebhiḥ
Dative	vyavāyāya	vyavāyābhyām	vyavāyebhyaḥ
Ablative	vyavāyāt	vyavāyābhyām	vyavāyebhyaḥ
Genitive	vyavāyasya	vyavāyayoḥ	vyavāyānām
Locative	vyavāye	vyavāyayoḥ	vyavāyeṣu

Compound vyavāya -

Adverb -vyavāyam -vyavāyāt