Task: Program Execution
Input (English): uQELXBoEmBLZzTZNoqupmNFPljWcmzcKmwbKX, WsUsOcNcyDazTZNoqupmNFPlKIztKdAZ
Output (English): b, c, e, f, j, k, l, m, n, o, p, q, t, u, w, x, z