Declension table of ?brahmapattra

Neuter	Singular	Dual	Plural
Nominative	brahmapattram	brahmapattre	brahmapattrāṇi
Vocative	brahmapattra	brahmapattre	brahmapattrāṇi
Accusative	brahmapattram	brahmapattre	brahmapattrāṇi
Instrumental	brahmapattreṇa	brahmapattrābhyām	brahmapattraiḥ
Dative	brahmapattrāya	brahmapattrābhyām	brahmapattrebhyaḥ
Ablative	brahmapattrāt	brahmapattrābhyām	brahmapattrebhyaḥ
Genitive	brahmapattrasya	brahmapattrayoḥ	brahmapattrāṇām
Locative	brahmapattre	brahmapattrayoḥ	brahmapattreṣu

Compound brahmapattra -

Adverb -brahmapattram -brahmapattrāt