Declension table of ?viṣṇāna

Masculine	Singular	Dual	Plural
Nominative	viṣṇānaḥ	viṣṇānau	viṣṇānāḥ
Vocative	viṣṇāna	viṣṇānau	viṣṇānāḥ
Accusative	viṣṇānam	viṣṇānau	viṣṇānān
Instrumental	viṣṇānena	viṣṇānābhyām	viṣṇānaiḥ viṣṇānebhiḥ
Dative	viṣṇānāya	viṣṇānābhyām	viṣṇānebhyaḥ
Ablative	viṣṇānāt	viṣṇānābhyām	viṣṇānebhyaḥ
Genitive	viṣṇānasya	viṣṇānayoḥ	viṣṇānānām
Locative	viṣṇāne	viṣṇānayoḥ	viṣṇāneṣu

Compound viṣṇāna -

Adverb -viṣṇānam -viṣṇānāt