Task: Program Execution
Input (English): VRxeAWOwUJFLvHdCkLzjGKksJwH, pVdaLfAaGeAWOwUJFLvHdCkLSiSZhltWstQlWJu
Output (English): a, c, d, e, f, g, h, i, j, k, l, o, p, q, s, t, u, v, w, z