Declension table of ?ṛṣabhadvīpa

Masculine	Singular	Dual	Plural
Nominative	ṛṣabhadvīpaḥ	ṛṣabhadvīpau	ṛṣabhadvīpāḥ
Vocative	ṛṣabhadvīpa	ṛṣabhadvīpau	ṛṣabhadvīpāḥ
Accusative	ṛṣabhadvīpam	ṛṣabhadvīpau	ṛṣabhadvīpān
Instrumental	ṛṣabhadvīpena	ṛṣabhadvīpābhyām	ṛṣabhadvīpaiḥ ṛṣabhadvīpebhiḥ
Dative	ṛṣabhadvīpāya	ṛṣabhadvīpābhyām	ṛṣabhadvīpebhyaḥ
Ablative	ṛṣabhadvīpāt	ṛṣabhadvīpābhyām	ṛṣabhadvīpebhyaḥ
Genitive	ṛṣabhadvīpasya	ṛṣabhadvīpayoḥ	ṛṣabhadvīpānām
Locative	ṛṣabhadvīpe	ṛṣabhadvīpayoḥ	ṛṣabhadvīpeṣu

Compound ṛṣabhadvīpa -

Adverb -ṛṣabhadvīpam -ṛṣabhadvīpāt