Task: Program Execution
Input (English): zfILwVbOFXXetyQfCBXVwmTmDbjZjJq, HOtpQZiMdXXetyQfCBXVlZqrOnGzxd
Output (English): b, c, d, e, f, i, j, l, m, o, q, t, v, w, x, y, z