Declension table of ?pratidvādaśan

Neuter	Singular	Dual	Plural
Nominative	pratidvādaśa	pratidvādaśnī pratidvādaśanī	pratidvādaśāni
Vocative	pratidvādaśan pratidvādaśa	pratidvādaśnī pratidvādaśanī	pratidvādaśāni
Accusative	pratidvādaśa	pratidvādaśnī pratidvādaśanī	pratidvādaśāni
Instrumental	pratidvādaśnā	pratidvādaśabhyām	pratidvādaśabhiḥ
Dative	pratidvādaśne	pratidvādaśabhyām	pratidvādaśabhyaḥ
Ablative	pratidvādaśnaḥ	pratidvādaśabhyām	pratidvādaśabhyaḥ
Genitive	pratidvādaśnaḥ	pratidvādaśnoḥ	pratidvādaśnām
Locative	pratidvādaśni pratidvādaśani	pratidvādaśnoḥ	pratidvādaśasu

Compound pratidvādaśa -

Adverb -pratidvādaśa -pratidvādaśam