Declension table of ?dvitvatva

Neuter	Singular	Dual	Plural
Nominative	dvitvatvam	dvitvatve	dvitvatvāni
Vocative	dvitvatva	dvitvatve	dvitvatvāni
Accusative	dvitvatvam	dvitvatve	dvitvatvāni
Instrumental	dvitvatvena	dvitvatvābhyām	dvitvatvaiḥ
Dative	dvitvatvāya	dvitvatvābhyām	dvitvatvebhyaḥ
Ablative	dvitvatvāt	dvitvatvābhyām	dvitvatvebhyaḥ
Genitive	dvitvatvasya	dvitvatvayoḥ	dvitvatvānām
Locative	dvitvatve	dvitvatvayoḥ	dvitvatveṣu

Compound dvitvatva -

Adverb -dvitvatvam -dvitvatvāt