Declension table of ?peyivas

Masculine	Singular	Dual	Plural
Nominative	peyivān	peyivāṃsau	peyivāṃsaḥ
Vocative	peyivan	peyivāṃsau	peyivāṃsaḥ
Accusative	peyivāṃsam	peyivāṃsau	peyuṣaḥ
Instrumental	peyuṣā	peyivadbhyām	peyivadbhiḥ
Dative	peyuṣe	peyivadbhyām	peyivadbhyaḥ
Ablative	peyuṣaḥ	peyivadbhyām	peyivadbhyaḥ
Genitive	peyuṣaḥ	peyuṣoḥ	peyuṣām
Locative	peyuṣi	peyuṣoḥ	peyivatsu

Compound peyivat -

Adverb -peyivas