Declension table of ?manthapātra

Neuter	Singular	Dual	Plural
Nominative	manthapātram	manthapātre	manthapātrāṇi
Vocative	manthapātra	manthapātre	manthapātrāṇi
Accusative	manthapātram	manthapātre	manthapātrāṇi
Instrumental	manthapātreṇa	manthapātrābhyām	manthapātraiḥ
Dative	manthapātrāya	manthapātrābhyām	manthapātrebhyaḥ
Ablative	manthapātrāt	manthapātrābhyām	manthapātrebhyaḥ
Genitive	manthapātrasya	manthapātrayoḥ	manthapātrāṇām
Locative	manthapātre	manthapātrayoḥ	manthapātreṣu

Compound manthapātra -

Adverb -manthapātram -manthapātrāt