Declension table of ?dvādaśapattra

Neuter	Singular	Dual	Plural
Nominative	dvādaśapattram	dvādaśapattre	dvādaśapattrāṇi
Vocative	dvādaśapattra	dvādaśapattre	dvādaśapattrāṇi
Accusative	dvādaśapattram	dvādaśapattre	dvādaśapattrāṇi
Instrumental	dvādaśapattreṇa	dvādaśapattrābhyām	dvādaśapattraiḥ
Dative	dvādaśapattrāya	dvādaśapattrābhyām	dvādaśapattrebhyaḥ
Ablative	dvādaśapattrāt	dvādaśapattrābhyām	dvādaśapattrebhyaḥ
Genitive	dvādaśapattrasya	dvādaśapattrayoḥ	dvādaśapattrāṇām
Locative	dvādaśapattre	dvādaśapattrayoḥ	dvādaśapattreṣu

Compound dvādaśapattra -

Adverb -dvādaśapattram -dvādaśapattrāt