Declension table of ?viviṣvas

Neuter	Singular	Dual	Plural
Nominative	viviṣvat	viviṣuṣī	viviṣvāṃsi
Vocative	viviṣvat	viviṣuṣī	viviṣvāṃsi
Accusative	viviṣvat	viviṣuṣī	viviṣvāṃsi
Instrumental	viviṣuṣā	viviṣvadbhyām	viviṣvadbhiḥ
Dative	viviṣuṣe	viviṣvadbhyām	viviṣvadbhyaḥ
Ablative	viviṣuṣaḥ	viviṣvadbhyām	viviṣvadbhyaḥ
Genitive	viviṣuṣaḥ	viviṣuṣoḥ	viviṣuṣām
Locative	viviṣuṣi	viviṣuṣoḥ	viviṣvatsu

Compound viviṣvat -

Adverb -viviṣvat