Task: Program Execution
Input (English): 8721, o, y, u, c, 7215, t, w, 6445, j, 4513, 3929, 1187, 6327, w, 5871, v, e, s, 6757, 2759, q
Output (English): c, e, j, o, q, s, t, u, v, w, y