Ok. Nothing on disk3 needs changing yet, so all the CS commands are dangerous or ineffective
What happens when you issue:
diskutil eject disk0s4
diskutil eraseVolume free free disk0s4
diskutil eject disk0s3
diskutil eraseVolume free free disk0s3
Also, please use care, if you delete the wrong 0s4 you will lose everything. Do you have a backup and internet to reinstall if you or I make a mistake?