Declension table of ?mahāpāna

Neuter	Singular	Dual	Plural
Nominative	mahāpānam	mahāpāne	mahāpānāni
Vocative	mahāpāna	mahāpāne	mahāpānāni
Accusative	mahāpānam	mahāpāne	mahāpānāni
Instrumental	mahāpānena	mahāpānābhyām	mahāpānaiḥ
Dative	mahāpānāya	mahāpānābhyām	mahāpānebhyaḥ
Ablative	mahāpānāt	mahāpānābhyām	mahāpānebhyaḥ
Genitive	mahāpānasya	mahāpānayoḥ	mahāpānānām
Locative	mahāpāne	mahāpānayoḥ	mahāpāneṣu

Compound mahāpāna -

Adverb -mahāpānam -mahāpānāt