Question: A new security protocol requires generating a 1 2 - character encryption key. The key should start with a letter ( A - Z ,

A new security protocol requires generating a 12-character encryption key. The key should start with a letter (A-Z, case-sensitive), followed by any combination of digits (0-9) and letters (A-Z, case-sensitive), and must end with a special character (!, @, #, or $). Additionally, the key must contain at least one digit and one lowercase letter. How many unique keys can be created under these conditions?

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