Declension table of ?aṣṭapattra

Masculine	Singular	Dual	Plural
Nominative	aṣṭapattraḥ	aṣṭapattrau	aṣṭapattrāḥ
Vocative	aṣṭapattra	aṣṭapattrau	aṣṭapattrāḥ
Accusative	aṣṭapattram	aṣṭapattrau	aṣṭapattrān
Instrumental	aṣṭapattreṇa	aṣṭapattrābhyām	aṣṭapattraiḥ aṣṭapattrebhiḥ
Dative	aṣṭapattrāya	aṣṭapattrābhyām	aṣṭapattrebhyaḥ
Ablative	aṣṭapattrāt	aṣṭapattrābhyām	aṣṭapattrebhyaḥ
Genitive	aṣṭapattrasya	aṣṭapattrayoḥ	aṣṭapattrāṇām
Locative	aṣṭapattre	aṣṭapattrayoḥ	aṣṭapattreṣu

Compound aṣṭapattra -

Adverb -aṣṭapattram -aṣṭapattrāt