Declension table of ?mahāpura

Neuter	Singular	Dual	Plural
Nominative	mahāpuram	mahāpure	mahāpurāṇi
Vocative	mahāpura	mahāpure	mahāpurāṇi
Accusative	mahāpuram	mahāpure	mahāpurāṇi
Instrumental	mahāpureṇa	mahāpurābhyām	mahāpuraiḥ
Dative	mahāpurāya	mahāpurābhyām	mahāpurebhyaḥ
Ablative	mahāpurāt	mahāpurābhyām	mahāpurebhyaḥ
Genitive	mahāpurasya	mahāpurayoḥ	mahāpurāṇām
Locative	mahāpure	mahāpurayoḥ	mahāpureṣu

Compound mahāpura -

Adverb -mahāpuram -mahāpurāt