Declension table of ?viṣṇāna

Neuter	Singular	Dual	Plural
Nominative	viṣṇānam	viṣṇāne	viṣṇānāni
Vocative	viṣṇāna	viṣṇāne	viṣṇānāni
Accusative	viṣṇānam	viṣṇāne	viṣṇānāni
Instrumental	viṣṇānena	viṣṇānābhyām	viṣṇānaiḥ
Dative	viṣṇānāya	viṣṇānābhyām	viṣṇānebhyaḥ
Ablative	viṣṇānāt	viṣṇānābhyām	viṣṇānebhyaḥ
Genitive	viṣṇānasya	viṣṇānayoḥ	viṣṇānānām
Locative	viṣṇāne	viṣṇānayoḥ	viṣṇāneṣu

Compound viṣṇāna -

Adverb -viṣṇānam -viṣṇānāt