Declension table of ?mamanthvas

Masculine	Singular	Dual	Plural
Nominative	mamanthvān	mamanthvāṃsau	mamanthvāṃsaḥ
Vocative	mamanthvan	mamanthvāṃsau	mamanthvāṃsaḥ
Accusative	mamanthvāṃsam	mamanthvāṃsau	mamanthuṣaḥ
Instrumental	mamanthuṣā	mamanthvadbhyām	mamanthvadbhiḥ
Dative	mamanthuṣe	mamanthvadbhyām	mamanthvadbhyaḥ
Ablative	mamanthuṣaḥ	mamanthvadbhyām	mamanthvadbhyaḥ
Genitive	mamanthuṣaḥ	mamanthuṣoḥ	mamanthuṣām
Locative	mamanthuṣi	mamanthuṣoḥ	mamanthvatsu

Compound mamanthvat -

Adverb -mamanthvas