Question: 1. Encrypt the message purple cow using atbash.
2. Decrypt the message hgirkvw xzg, which was encrypted using atbash.
3. Encrypt the message lions tigers and bears oh my using a Vigen`ere cipher and key word zoo.
4. Decrypt the message wwrfw aiw wowl, which was encrypted with a standard Vigen`ere cipher using key word ears.