Declension table of ?peru

Masculine	Singular	Dual	Plural
Nominative	peruḥ	perū	peravaḥ
Vocative	pero	perū	peravaḥ
Accusative	perum	perū	perūn
Instrumental	peruṇā	perubhyām	perubhiḥ
Dative	perave	perubhyām	perubhyaḥ
Ablative	peroḥ	perubhyām	perubhyaḥ
Genitive	peroḥ	pervoḥ	perūṇām
Locative	perau	pervoḥ	peruṣu

Compound peru -

Adverb -peru