Declension table of ?mahāparvata

Masculine	Singular	Dual	Plural
Nominative	mahāparvataḥ	mahāparvatau	mahāparvatāḥ
Vocative	mahāparvata	mahāparvatau	mahāparvatāḥ
Accusative	mahāparvatam	mahāparvatau	mahāparvatān
Instrumental	mahāparvatena	mahāparvatābhyām	mahāparvataiḥ mahāparvatebhiḥ
Dative	mahāparvatāya	mahāparvatābhyām	mahāparvatebhyaḥ
Ablative	mahāparvatāt	mahāparvatābhyām	mahāparvatebhyaḥ
Genitive	mahāparvatasya	mahāparvatayoḥ	mahāparvatānām
Locative	mahāparvate	mahāparvatayoḥ	mahāparvateṣu

Compound mahāparvata -

Adverb -mahāparvatam -mahāparvatāt