Declension table of ?karapātra

Neuter	Singular	Dual	Plural
Nominative	karapātram	karapātre	karapātrāṇi
Vocative	karapātra	karapātre	karapātrāṇi
Accusative	karapātram	karapātre	karapātrāṇi
Instrumental	karapātreṇa	karapātrābhyām	karapātraiḥ
Dative	karapātrāya	karapātrābhyām	karapātrebhyaḥ
Ablative	karapātrāt	karapātrābhyām	karapātrebhyaḥ
Genitive	karapātrasya	karapātrayoḥ	karapātrāṇām
Locative	karapātre	karapātrayoḥ	karapātreṣu

Compound karapātra -

Adverb -karapātram -karapātrāt