Doesn't really matter because it's too short. Crackable in 10 seconds if the password hashing is poorly implemented. (I assume Amazon implements good hashing, but that's besides the point. Your algorithm generates passwords that are just a bit too short.)

https://lowe.github.io/tryzxcvbn/

https://blog.codinghorror.com/your-password-is-too-damn-shor...