Task: Program Execution
Input (English): yqqwcfEaMrKNfHXtchKzoklioxsu, evrrGCTfNDzNfHXtchKzoklioxCIHVXuqKf
Output (English): c, d, e, f, g, h, i, k, l, n, o, q, r, t, u, v, x, z