Declension table of ?petivas

Masculine	Singular	Dual	Plural
Nominative	petivān	petivāṃsau	petivāṃsaḥ
Vocative	petivan	petivāṃsau	petivāṃsaḥ
Accusative	petivāṃsam	petivāṃsau	petuṣaḥ
Instrumental	petuṣā	petivadbhyām	petivadbhiḥ
Dative	petuṣe	petivadbhyām	petivadbhyaḥ
Ablative	petuṣaḥ	petivadbhyām	petivadbhyaḥ
Genitive	petuṣaḥ	petuṣoḥ	petuṣām
Locative	petuṣi	petuṣoḥ	petivatsu

Compound petivat -

Adverb -petivas