How do you solve an amsco cipher?

To solve an Amsco cipher, you first need to identify the key used in the encryption process, which typically involves a keyWord or phrase that rearranges the alphabet. Once you have the key, create a substitution alphabet by aligning it with the regular alphabet. Then, replace each letter in the ciphertext with its corresponding letter from the substitution alphabet. Finally, read the resulting plaintext to decode the message.