Declension table of ?dvinidhana

Neuter	Singular	Dual	Plural
Nominative	dvinidhanam	dvinidhane	dvinidhanāni
Vocative	dvinidhana	dvinidhane	dvinidhanāni
Accusative	dvinidhanam	dvinidhane	dvinidhanāni
Instrumental	dvinidhanena	dvinidhanābhyām	dvinidhanaiḥ
Dative	dvinidhanāya	dvinidhanābhyām	dvinidhanebhyaḥ
Ablative	dvinidhanāt	dvinidhanābhyām	dvinidhanebhyaḥ
Genitive	dvinidhanasya	dvinidhanayoḥ	dvinidhanānām
Locative	dvinidhane	dvinidhanayoḥ	dvinidhaneṣu

Compound dvinidhana -

Adverb -dvinidhanam -dvinidhanāt