Declension table of ?saptaviṃśaka

Masculine	Singular	Dual	Plural
Nominative	saptaviṃśakaḥ	saptaviṃśakau	saptaviṃśakāḥ
Vocative	saptaviṃśaka	saptaviṃśakau	saptaviṃśakāḥ
Accusative	saptaviṃśakam	saptaviṃśakau	saptaviṃśakān
Instrumental	saptaviṃśakena	saptaviṃśakābhyām	saptaviṃśakaiḥ saptaviṃśakebhiḥ
Dative	saptaviṃśakāya	saptaviṃśakābhyām	saptaviṃśakebhyaḥ
Ablative	saptaviṃśakāt	saptaviṃśakābhyām	saptaviṃśakebhyaḥ
Genitive	saptaviṃśakasya	saptaviṃśakayoḥ	saptaviṃśakānām
Locative	saptaviṃśake	saptaviṃśakayoḥ	saptaviṃśakeṣu

Compound saptaviṃśaka -

Adverb -saptaviṃśakam -saptaviṃśakāt