Declension table of ?yayivas

Neuter	Singular	Dual	Plural
Nominative	yayivat	yayuṣī	yayivāṃsi
Vocative	yayivat	yayuṣī	yayivāṃsi
Accusative	yayivat	yayuṣī	yayivāṃsi
Instrumental	yayuṣā	yayivadbhyām	yayivadbhiḥ
Dative	yayuṣe	yayivadbhyām	yayivadbhyaḥ
Ablative	yayuṣaḥ	yayivadbhyām	yayivadbhyaḥ
Genitive	yayuṣaḥ	yayuṣoḥ	yayuṣām
Locative	yayuṣi	yayuṣoḥ	yayivatsu

Compound yayivat -

Adverb -yayivas