Can I clone these AMIs?

No.

You are prohibited under the terms of our End User License Agreement from creating any cloned instances of our AMI for use in your internal provisioning process. If you require this functionality in order to provide customized instances based on our AMI for your internal use, please contact our sales team for licensing. All licensing is based on the total number of EC2 instances that will be running during a 12 month period using any of our AMI baselines as a starting point.