Task: Program Execution
Input (English): ZCKlGcAXDgnYYrOnxIpLLlZeFYSLnQeqKmkz, MyEjZgHWCZVrOnxIpLLlZeFYpmpQQAernuL
Output (English): a, c, d, e, f, g, i, k, l, m, n, o, p, q, r, s, x, y, z