Declension table of ?mahopakāra

Masculine	Singular	Dual	Plural
Nominative	mahopakāraḥ	mahopakārau	mahopakārāḥ
Vocative	mahopakāra	mahopakārau	mahopakārāḥ
Accusative	mahopakāram	mahopakārau	mahopakārān
Instrumental	mahopakāreṇa	mahopakārābhyām	mahopakāraiḥ mahopakārebhiḥ
Dative	mahopakārāya	mahopakārābhyām	mahopakārebhyaḥ
Ablative	mahopakārāt	mahopakārābhyām	mahopakārebhyaḥ
Genitive	mahopakārasya	mahopakārayoḥ	mahopakārāṇām
Locative	mahopakāre	mahopakārayoḥ	mahopakāreṣu

Compound mahopakāra -

Adverb -mahopakāram -mahopakārāt