Declension table of ?avyasta

Neuter	Singular	Dual	Plural
Nominative	avyastam	avyaste	avyastāni
Vocative	avyasta	avyaste	avyastāni
Accusative	avyastam	avyaste	avyastāni
Instrumental	avyastena	avyastābhyām	avyastaiḥ
Dative	avyastāya	avyastābhyām	avyastebhyaḥ
Ablative	avyastāt	avyastābhyām	avyastebhyaḥ
Genitive	avyastasya	avyastayoḥ	avyastānām
Locative	avyaste	avyastayoḥ	avyasteṣu

Compound avyasta -

Adverb -avyastam -avyastāt