Declension table of ?sapattra

Masculine	Singular	Dual	Plural
Nominative	sapattraḥ	sapattrau	sapattrāḥ
Vocative	sapattra	sapattrau	sapattrāḥ
Accusative	sapattram	sapattrau	sapattrān
Instrumental	sapattreṇa	sapattrābhyām	sapattraiḥ sapattrebhiḥ
Dative	sapattrāya	sapattrābhyām	sapattrebhyaḥ
Ablative	sapattrāt	sapattrābhyām	sapattrebhyaḥ
Genitive	sapattrasya	sapattrayoḥ	sapattrāṇām
Locative	sapattre	sapattrayoḥ	sapattreṣu

Compound sapattra -

Adverb -sapattram -sapattrāt