Task: Program Execution
Input (English): sZByDnhsspPiiuZwiVWNNPRerTv, FXsIpJdVMUJZPiiuZwiVWNNPRxFGjPAQxWb
Output (English): a, b, d, f, g, i, j, m, n, p, q, r, s, u, v, w, x, z