Task: Program Execution
Input (English): PPUtmdYKcRybPCwNPDqxHJSaEDGwKvJzXSOZ, anliySlgYBLhybPCwNPDqxHJSNIeRjSfPxh
Output (English): a, b, c, d, e, g, h, j, k, m, n, o, p, q, r, s, t, u, v, w, x, y, z