Declension table of ?apāpada

Masculine	Singular	Dual	Plural
Nominative	apāpadaḥ	apāpadau	apāpadāḥ
Vocative	apāpada	apāpadau	apāpadāḥ
Accusative	apāpadam	apāpadau	apāpadān
Instrumental	apāpadena	apāpadābhyām	apāpadaiḥ apāpadebhiḥ
Dative	apāpadāya	apāpadābhyām	apāpadebhyaḥ
Ablative	apāpadāt	apāpadābhyām	apāpadebhyaḥ
Genitive	apāpadasya	apāpadayoḥ	apāpadānām
Locative	apāpade	apāpadayoḥ	apāpadeṣu

Compound apāpada -

Adverb -apāpadam -apāpadāt