Declension table of ?saptatisaṅkhyāka

Masculine	Singular	Dual	Plural
Nominative	saptatisaṅkhyākaḥ	saptatisaṅkhyākau	saptatisaṅkhyākāḥ
Vocative	saptatisaṅkhyāka	saptatisaṅkhyākau	saptatisaṅkhyākāḥ
Accusative	saptatisaṅkhyākam	saptatisaṅkhyākau	saptatisaṅkhyākān
Instrumental	saptatisaṅkhyākena	saptatisaṅkhyākābhyām	saptatisaṅkhyākaiḥ saptatisaṅkhyākebhiḥ
Dative	saptatisaṅkhyākāya	saptatisaṅkhyākābhyām	saptatisaṅkhyākebhyaḥ
Ablative	saptatisaṅkhyākāt	saptatisaṅkhyākābhyām	saptatisaṅkhyākebhyaḥ
Genitive	saptatisaṅkhyākasya	saptatisaṅkhyākayoḥ	saptatisaṅkhyākānām
Locative	saptatisaṅkhyāke	saptatisaṅkhyākayoḥ	saptatisaṅkhyākeṣu

Compound saptatisaṅkhyāka -

Adverb -saptatisaṅkhyākam -saptatisaṅkhyākāt