Declension table of ?saptadvīpa

Masculine	Singular	Dual	Plural
Nominative	saptadvīpaḥ	saptadvīpau	saptadvīpāḥ
Vocative	saptadvīpa	saptadvīpau	saptadvīpāḥ
Accusative	saptadvīpam	saptadvīpau	saptadvīpān
Instrumental	saptadvīpena	saptadvīpābhyām	saptadvīpaiḥ saptadvīpebhiḥ
Dative	saptadvīpāya	saptadvīpābhyām	saptadvīpebhyaḥ
Ablative	saptadvīpāt	saptadvīpābhyām	saptadvīpebhyaḥ
Genitive	saptadvīpasya	saptadvīpayoḥ	saptadvīpānām
Locative	saptadvīpe	saptadvīpayoḥ	saptadvīpeṣu

Compound saptadvīpa -

Adverb -saptadvīpam -saptadvīpāt