Declension table of ?penivas

Masculine	Singular	Dual	Plural
Nominative	penivān	penivāṃsau	penivāṃsaḥ
Vocative	penivan	penivāṃsau	penivāṃsaḥ
Accusative	penivāṃsam	penivāṃsau	penuṣaḥ
Instrumental	penuṣā	penivadbhyām	penivadbhiḥ
Dative	penuṣe	penivadbhyām	penivadbhyaḥ
Ablative	penuṣaḥ	penivadbhyām	penivadbhyaḥ
Genitive	penuṣaḥ	penuṣoḥ	penuṣām
Locative	penuṣi	penuṣoḥ	penivatsu

Compound penivat -

Adverb -penivas