Declension table of ?viviṣvas

Masculine	Singular	Dual	Plural
Nominative	viviṣvān	viviṣvāṃsau	viviṣvāṃsaḥ
Vocative	viviṣvan	viviṣvāṃsau	viviṣvāṃsaḥ
Accusative	viviṣvāṃsam	viviṣvāṃsau	viviṣuṣaḥ
Instrumental	viviṣuṣā	viviṣvadbhyām	viviṣvadbhiḥ
Dative	viviṣuṣe	viviṣvadbhyām	viviṣvadbhyaḥ
Ablative	viviṣuṣaḥ	viviṣvadbhyām	viviṣvadbhyaḥ
Genitive	viviṣuṣaḥ	viviṣuṣoḥ	viviṣuṣām
Locative	viviṣuṣi	viviṣuṣoḥ	viviṣvatsu

Compound viviṣvat -

Adverb -viviṣvas