Declension table of mahādeva

Neuter	Singular	Dual	Plural
Nominative	mahādevam	mahādeve	mahādevāni
Vocative	mahādeva	mahādeve	mahādevāni
Accusative	mahādevam	mahādeve	mahādevāni
Instrumental	mahādevena	mahādevābhyām	mahādevaiḥ
Dative	mahādevāya	mahādevābhyām	mahādevebhyaḥ
Ablative	mahādevāt	mahādevābhyām	mahādevebhyaḥ
Genitive	mahādevasya	mahādevayoḥ	mahādevānām
Locative	mahādeve	mahādevayoḥ	mahādeveṣu

Compound mahādeva -

Adverb -mahādevam -mahādevāt