Declension table of ?saptin

Masculine	Singular	Dual	Plural
Nominative	saptī	saptinau	saptinaḥ
Vocative	saptin	saptinau	saptinaḥ
Accusative	saptinam	saptinau	saptinaḥ
Instrumental	saptinā	saptibhyām	saptibhiḥ
Dative	saptine	saptibhyām	saptibhyaḥ
Ablative	saptinaḥ	saptibhyām	saptibhyaḥ
Genitive	saptinaḥ	saptinoḥ	saptinām
Locative	saptini	saptinoḥ	saptiṣu

Compound sapti -

Adverb -sapti