Declension table of ?viparvan

Masculine	Singular	Dual	Plural
Nominative	viparvā	viparvāṇau	viparvāṇaḥ
Vocative	viparvan	viparvāṇau	viparvāṇaḥ
Accusative	viparvāṇam	viparvāṇau	viparvaṇaḥ
Instrumental	viparvaṇā	viparvabhyām	viparvabhiḥ
Dative	viparvaṇe	viparvabhyām	viparvabhyaḥ
Ablative	viparvaṇaḥ	viparvabhyām	viparvabhyaḥ
Genitive	viparvaṇaḥ	viparvaṇoḥ	viparvaṇām
Locative	viparvaṇi	viparvaṇoḥ	viparvasu

Compound viparva -

Adverb -viparvam