Declension table of ?mantrapattra

Neuter	Singular	Dual	Plural
Nominative	mantrapattram	mantrapattre	mantrapattrāṇi
Vocative	mantrapattra	mantrapattre	mantrapattrāṇi
Accusative	mantrapattram	mantrapattre	mantrapattrāṇi
Instrumental	mantrapattreṇa	mantrapattrābhyām	mantrapattraiḥ
Dative	mantrapattrāya	mantrapattrābhyām	mantrapattrebhyaḥ
Ablative	mantrapattrāt	mantrapattrābhyām	mantrapattrebhyaḥ
Genitive	mantrapattrasya	mantrapattrayoḥ	mantrapattrāṇām
Locative	mantrapattre	mantrapattrayoḥ	mantrapattreṣu

Compound mantrapattra -

Adverb -mantrapattram -mantrapattrāt