Declension table of ?mahāsoma

Masculine	Singular	Dual	Plural
Nominative	mahāsomaḥ	mahāsomau	mahāsomāḥ
Vocative	mahāsoma	mahāsomau	mahāsomāḥ
Accusative	mahāsomam	mahāsomau	mahāsomān
Instrumental	mahāsomena	mahāsomābhyām	mahāsomaiḥ mahāsomebhiḥ
Dative	mahāsomāya	mahāsomābhyām	mahāsomebhyaḥ
Ablative	mahāsomāt	mahāsomābhyām	mahāsomebhyaḥ
Genitive	mahāsomasya	mahāsomayoḥ	mahāsomānām
Locative	mahāsome	mahāsomayoḥ	mahāsomeṣu

Compound mahāsoma -

Adverb -mahāsomam -mahāsomāt