Declension table of saptadaśa

Neuter	Singular	Dual	Plural
Nominative	saptadaśam	saptadaśe	saptadaśāni
Vocative	saptadaśa	saptadaśe	saptadaśāni
Accusative	saptadaśam	saptadaśe	saptadaśāni
Instrumental	saptadaśena	saptadaśābhyām	saptadaśaiḥ
Dative	saptadaśāya	saptadaśābhyām	saptadaśebhyaḥ
Ablative	saptadaśāt	saptadaśābhyām	saptadaśebhyaḥ
Genitive	saptadaśasya	saptadaśayoḥ	saptadaśānām
Locative	saptadaśe	saptadaśayoḥ	saptadaśeṣu

Compound saptadaśa -

Adverb -saptadaśam -saptadaśāt