Declension table of ?dvaivacana

Neuter	Singular	Dual	Plural
Nominative	dvaivacanam	dvaivacane	dvaivacanāni
Vocative	dvaivacana	dvaivacane	dvaivacanāni
Accusative	dvaivacanam	dvaivacane	dvaivacanāni
Instrumental	dvaivacanena	dvaivacanābhyām	dvaivacanaiḥ
Dative	dvaivacanāya	dvaivacanābhyām	dvaivacanebhyaḥ
Ablative	dvaivacanāt	dvaivacanābhyām	dvaivacanebhyaḥ
Genitive	dvaivacanasya	dvaivacanayoḥ	dvaivacanānām
Locative	dvaivacane	dvaivacanayoḥ	dvaivacaneṣu

Compound dvaivacana -

Adverb -dvaivacanam -dvaivacanāt