Create new account error The given domain based account already exist

Hi,
Try to create new accounts and get error The given domain based account already exist
Please delete this email from database.
admin@movingcalifornia.us
admin@websait.uz.ua
admin@beregovolh.com.ua
info@websait.uz.ua
admin@vbychkivlmg.com.ua
admin@websait.if.ua
admin@mukachevolis.com.ua
info@websait.if.ua
Thanks

Best,
Omelyan