Declension table of ?dvaivacana

Masculine	Singular	Dual	Plural
Nominative	dvaivacanaḥ	dvaivacanau	dvaivacanāḥ
Vocative	dvaivacana	dvaivacanau	dvaivacanāḥ
Accusative	dvaivacanam	dvaivacanau	dvaivacanān
Instrumental	dvaivacanena	dvaivacanābhyām	dvaivacanaiḥ dvaivacanebhiḥ
Dative	dvaivacanāya	dvaivacanābhyām	dvaivacanebhyaḥ
Ablative	dvaivacanāt	dvaivacanābhyām	dvaivacanebhyaḥ
Genitive	dvaivacanasya	dvaivacanayoḥ	dvaivacanānām
Locative	dvaivacane	dvaivacanayoḥ	dvaivacaneṣu

Compound dvaivacana -

Adverb -dvaivacanam -dvaivacanāt