Declension table of ?mahārudra

Masculine	Singular	Dual	Plural
Nominative	mahārudraḥ	mahārudrau	mahārudrāḥ
Vocative	mahārudra	mahārudrau	mahārudrāḥ
Accusative	mahārudram	mahārudrau	mahārudrān
Instrumental	mahārudreṇa	mahārudrābhyām	mahārudraiḥ mahārudrebhiḥ
Dative	mahārudrāya	mahārudrābhyām	mahārudrebhyaḥ
Ablative	mahārudrāt	mahārudrābhyām	mahārudrebhyaḥ
Genitive	mahārudrasya	mahārudrayoḥ	mahārudrāṇām
Locative	mahārudre	mahārudrayoḥ	mahārudreṣu

Compound mahārudra -

Adverb -mahārudram -mahārudrāt