Task: Program Execution
Input (English): tgpuIdtZNCTkxWdHqZnITYqyEQEDUOegSZov, cdHLCTkxWdHqZnITYqebEdg
Output (English): c, d, e, g, h, i, k, n, o, p, q, s, t, u, v, w, x, y, z