Declension table of ?arkapattra

Masculine	Singular	Dual	Plural
Nominative	arkapattraḥ	arkapattrau	arkapattrāḥ
Vocative	arkapattra	arkapattrau	arkapattrāḥ
Accusative	arkapattram	arkapattrau	arkapattrān
Instrumental	arkapattreṇa	arkapattrābhyām	arkapattraiḥ arkapattrebhiḥ
Dative	arkapattrāya	arkapattrābhyām	arkapattrebhyaḥ
Ablative	arkapattrāt	arkapattrābhyām	arkapattrebhyaḥ
Genitive	arkapattrasya	arkapattrayoḥ	arkapattrāṇām
Locative	arkapattre	arkapattrayoḥ	arkapattreṣu

Compound arkapattra -

Adverb -arkapattram -arkapattrāt