Declension table of ?tvañcāna

Neuter	Singular	Dual	Plural
Nominative	tvañcānam	tvañcāne	tvañcānāni
Vocative	tvañcāna	tvañcāne	tvañcānāni
Accusative	tvañcānam	tvañcāne	tvañcānāni
Instrumental	tvañcānena	tvañcānābhyām	tvañcānaiḥ
Dative	tvañcānāya	tvañcānābhyām	tvañcānebhyaḥ
Ablative	tvañcānāt	tvañcānābhyām	tvañcānebhyaḥ
Genitive	tvañcānasya	tvañcānayoḥ	tvañcānānām
Locative	tvañcāne	tvañcānayoḥ	tvañcāneṣu

Compound tvañcāna -

Adverb -tvañcānam -tvañcānāt