--list-secret-keys
-K
    List all keys from the secret keyrings, or just the ones given on the command line. A # after the letters sec means that the secret key is not usable (for example, if it was created via --export-secret-subkeys).

           _                     _  __      __               _  _ __  
          | | _____  _ __   __ _/ |/ /_    / /_   _____ _ __| || |\ \ 
          | |/ / _ \| '_ \ / _` | | '_ \  | |\ \ / / _ \ '__| || |_| |
          |   < (_) | | | | (_| | | (_) | | | \ V /  __/ |  |__   _| |
          |_|\_\___/|_| |_|\__,_|_|\___/  | |  \_/ \___|_|     |_| | |
                                           \_\                    /_/