Declension table of ?pratidvādaśan

Masculine	Singular	Dual	Plural
Nominative	pratidvādaśā	pratidvādaśānau	pratidvādaśānaḥ
Vocative	pratidvādaśan	pratidvādaśānau	pratidvādaśānaḥ
Accusative	pratidvādaśānam	pratidvādaśānau	pratidvādaśnaḥ
Instrumental	pratidvādaśnā	pratidvādaśabhyām	pratidvādaśabhiḥ
Dative	pratidvādaśne	pratidvādaśabhyām	pratidvādaśabhyaḥ
Ablative	pratidvādaśnaḥ	pratidvādaśabhyām	pratidvādaśabhyaḥ
Genitive	pratidvādaśnaḥ	pratidvādaśnoḥ	pratidvādaśnām
Locative	pratidvādaśni pratidvādaśani	pratidvādaśnoḥ	pratidvādaśasu

Compound pratidvādaśa -

Adverb -pratidvādaśam