Declension table of ?yesivas

Masculine	Singular	Dual	Plural
Nominative	yesivān	yesivāṃsau	yesivāṃsaḥ
Vocative	yesivan	yesivāṃsau	yesivāṃsaḥ
Accusative	yesivāṃsam	yesivāṃsau	yesuṣaḥ
Instrumental	yesuṣā	yesivadbhyām	yesivadbhiḥ
Dative	yesuṣe	yesivadbhyām	yesivadbhyaḥ
Ablative	yesuṣaḥ	yesivadbhyām	yesivadbhyaḥ
Genitive	yesuṣaḥ	yesuṣoḥ	yesuṣām
Locative	yesuṣi	yesuṣoḥ	yesivatsu

Compound yesivat -

Adverb -yesivas