Declension table of ?viparvan

Neuter	Singular	Dual	Plural
Nominative	viparva	viparvṇī viparvaṇī	viparvāṇi
Vocative	viparvan viparva	viparvṇī viparvaṇī	viparvāṇi
Accusative	viparva	viparvṇī viparvaṇī	viparvāṇi
Instrumental	viparvaṇā	viparvabhyām	viparvabhiḥ
Dative	viparvaṇe	viparvabhyām	viparvabhyaḥ
Ablative	viparvaṇaḥ	viparvabhyām	viparvabhyaḥ
Genitive	viparvaṇaḥ	viparvaṇoḥ	viparvaṇām
Locative	viparvaṇi	viparvaṇoḥ	viparvasu

Compound viparva -

Adverb -viparva -viparvam