Declension table of ?āvasāna

Masculine	Singular	Dual	Plural
Nominative	āvasānaḥ	āvasānau	āvasānāḥ
Vocative	āvasāna	āvasānau	āvasānāḥ
Accusative	āvasānam	āvasānau	āvasānān
Instrumental	āvasānena	āvasānābhyām	āvasānaiḥ āvasānebhiḥ
Dative	āvasānāya	āvasānābhyām	āvasānebhyaḥ
Ablative	āvasānāt	āvasānābhyām	āvasānebhyaḥ
Genitive	āvasānasya	āvasānayoḥ	āvasānānām
Locative	āvasāne	āvasānayoḥ	āvasāneṣu

Compound āvasāna -

Adverb -āvasānam -āvasānāt