Declension table of ?antastapta

Masculine	Singular	Dual	Plural
Nominative	antastaptaḥ	antastaptau	antastaptāḥ
Vocative	antastapta	antastaptau	antastaptāḥ
Accusative	antastaptam	antastaptau	antastaptān
Instrumental	antastaptena	antastaptābhyām	antastaptaiḥ antastaptebhiḥ
Dative	antastaptāya	antastaptābhyām	antastaptebhyaḥ
Ablative	antastaptāt	antastaptābhyām	antastaptebhyaḥ
Genitive	antastaptasya	antastaptayoḥ	antastaptānām
Locative	antastapte	antastaptayoḥ	antastapteṣu

Compound antastapta -

Adverb -antastaptam -antastaptāt