Task: Program Execution
Input (English): oPKFQrDYpwLEdAXWPzppdHciCIlNOIxLqk, TAkAdItqJvzjEAXWPzppdHciCIcsspYdlLWuy
Output (English): a, c, d, e, h, i, j, k, l, p, q, s, t, u, v, w, x, y, z