Declension table of ?saptasaptaka

Masculine	Singular	Dual	Plural
Nominative	saptasaptakaḥ	saptasaptakau	saptasaptakāḥ
Vocative	saptasaptaka	saptasaptakau	saptasaptakāḥ
Accusative	saptasaptakam	saptasaptakau	saptasaptakān
Instrumental	saptasaptakena	saptasaptakābhyām	saptasaptakaiḥ saptasaptakebhiḥ
Dative	saptasaptakāya	saptasaptakābhyām	saptasaptakebhyaḥ
Ablative	saptasaptakāt	saptasaptakābhyām	saptasaptakebhyaḥ
Genitive	saptasaptakasya	saptasaptakayoḥ	saptasaptakānām
Locative	saptasaptake	saptasaptakayoḥ	saptasaptakeṣu

Compound saptasaptaka -

Adverb -saptasaptakam -saptasaptakāt