Declension table of ?saptasaptin

Neuter	Singular	Dual	Plural
Nominative	saptasapti	saptasaptinī	saptasaptīni
Vocative	saptasaptin saptasapti	saptasaptinī	saptasaptīni
Accusative	saptasapti	saptasaptinī	saptasaptīni
Instrumental	saptasaptinā	saptasaptibhyām	saptasaptibhiḥ
Dative	saptasaptine	saptasaptibhyām	saptasaptibhyaḥ
Ablative	saptasaptinaḥ	saptasaptibhyām	saptasaptibhyaḥ
Genitive	saptasaptinaḥ	saptasaptinoḥ	saptasaptinām
Locative	saptasaptini	saptasaptinoḥ	saptasaptiṣu

Compound saptasapti -

Adverb -saptasapti