Declension table of ?nivacana

Neuter	Singular	Dual	Plural
Nominative	nivacanam	nivacane	nivacanāni
Vocative	nivacana	nivacane	nivacanāni
Accusative	nivacanam	nivacane	nivacanāni
Instrumental	nivacanena	nivacanābhyām	nivacanaiḥ
Dative	nivacanāya	nivacanābhyām	nivacanebhyaḥ
Ablative	nivacanāt	nivacanābhyām	nivacanebhyaḥ
Genitive	nivacanasya	nivacanayoḥ	nivacanānām
Locative	nivacane	nivacanayoḥ	nivacaneṣu

Compound nivacana -

Adverb -nivacanam -nivacanāt