Declension table of ?karpūradvīpa

Masculine	Singular	Dual	Plural
Nominative	karpūradvīpaḥ	karpūradvīpau	karpūradvīpāḥ
Vocative	karpūradvīpa	karpūradvīpau	karpūradvīpāḥ
Accusative	karpūradvīpam	karpūradvīpau	karpūradvīpān
Instrumental	karpūradvīpena	karpūradvīpābhyām	karpūradvīpaiḥ karpūradvīpebhiḥ
Dative	karpūradvīpāya	karpūradvīpābhyām	karpūradvīpebhyaḥ
Ablative	karpūradvīpāt	karpūradvīpābhyām	karpūradvīpebhyaḥ
Genitive	karpūradvīpasya	karpūradvīpayoḥ	karpūradvīpānām
Locative	karpūradvīpe	karpūradvīpayoḥ	karpūradvīpeṣu

Compound karpūradvīpa -

Adverb -karpūradvīpam -karpūradvīpāt