Declension table of ?dīrghapattra

Neuter	Singular	Dual	Plural
Nominative	dīrghapattram	dīrghapattre	dīrghapattrāṇi
Vocative	dīrghapattra	dīrghapattre	dīrghapattrāṇi
Accusative	dīrghapattram	dīrghapattre	dīrghapattrāṇi
Instrumental	dīrghapattreṇa	dīrghapattrābhyām	dīrghapattraiḥ
Dative	dīrghapattrāya	dīrghapattrābhyām	dīrghapattrebhyaḥ
Ablative	dīrghapattrāt	dīrghapattrābhyām	dīrghapattrebhyaḥ
Genitive	dīrghapattrasya	dīrghapattrayoḥ	dīrghapattrāṇām
Locative	dīrghapattre	dīrghapattrayoḥ	dīrghapattreṣu

Compound dīrghapattra -

Adverb -dīrghapattram -dīrghapattrāt