Declension table of ?avyavasta

Neuter	Singular	Dual	Plural
Nominative	avyavastam	avyavaste	avyavastāni
Vocative	avyavasta	avyavaste	avyavastāni
Accusative	avyavastam	avyavaste	avyavastāni
Instrumental	avyavastena	avyavastābhyām	avyavastaiḥ
Dative	avyavastāya	avyavastābhyām	avyavastebhyaḥ
Ablative	avyavastāt	avyavastābhyām	avyavastebhyaḥ
Genitive	avyavastasya	avyavastayoḥ	avyavastānām
Locative	avyavaste	avyavastayoḥ	avyavasteṣu

Compound avyavasta -

Adverb -avyavastam -avyavastāt