Declension table of ?āpāna

Neuter	Singular	Dual	Plural
Nominative	āpānam	āpāne	āpānāni
Vocative	āpāna	āpāne	āpānāni
Accusative	āpānam	āpāne	āpānāni
Instrumental	āpānena	āpānābhyām	āpānaiḥ
Dative	āpānāya	āpānābhyām	āpānebhyaḥ
Ablative	āpānāt	āpānābhyām	āpānebhyaḥ
Genitive	āpānasya	āpānayoḥ	āpānānām
Locative	āpāne	āpānayoḥ	āpāneṣu

Compound āpāna -

Adverb -āpānam -āpānāt