Declension table of ?plakṣadvīpa

Masculine	Singular	Dual	Plural
Nominative	plakṣadvīpaḥ	plakṣadvīpau	plakṣadvīpāḥ
Vocative	plakṣadvīpa	plakṣadvīpau	plakṣadvīpāḥ
Accusative	plakṣadvīpam	plakṣadvīpau	plakṣadvīpān
Instrumental	plakṣadvīpena	plakṣadvīpābhyām	plakṣadvīpaiḥ plakṣadvīpebhiḥ
Dative	plakṣadvīpāya	plakṣadvīpābhyām	plakṣadvīpebhyaḥ
Ablative	plakṣadvīpāt	plakṣadvīpābhyām	plakṣadvīpebhyaḥ
Genitive	plakṣadvīpasya	plakṣadvīpayoḥ	plakṣadvīpānām
Locative	plakṣadvīpe	plakṣadvīpayoḥ	plakṣadvīpeṣu

Compound plakṣadvīpa -

Adverb -plakṣadvīpam -plakṣadvīpāt