Declension table of ?avyasana

Neuter	Singular	Dual	Plural
Nominative	avyasanam	avyasane	avyasanāni
Vocative	avyasana	avyasane	avyasanāni
Accusative	avyasanam	avyasane	avyasanāni
Instrumental	avyasanena	avyasanābhyām	avyasanaiḥ
Dative	avyasanāya	avyasanābhyām	avyasanebhyaḥ
Ablative	avyasanāt	avyasanābhyām	avyasanebhyaḥ
Genitive	avyasanasya	avyasanayoḥ	avyasanānām
Locative	avyasane	avyasanayoḥ	avyasaneṣu

Compound avyasana -

Adverb -avyasanam -avyasanāt