Declension table of ?dvitīyatva

Neuter	Singular	Dual	Plural
Nominative	dvitīyatvam	dvitīyatve	dvitīyatvāni
Vocative	dvitīyatva	dvitīyatve	dvitīyatvāni
Accusative	dvitīyatvam	dvitīyatve	dvitīyatvāni
Instrumental	dvitīyatvena	dvitīyatvābhyām	dvitīyatvaiḥ
Dative	dvitīyatvāya	dvitīyatvābhyām	dvitīyatvebhyaḥ
Ablative	dvitīyatvāt	dvitīyatvābhyām	dvitīyatvebhyaḥ
Genitive	dvitīyatvasya	dvitīyatvayoḥ	dvitīyatvānām
Locative	dvitīyatve	dvitīyatvayoḥ	dvitīyatveṣu

Compound dvitīyatva -

Adverb -dvitīyatvam -dvitīyatvāt