Task: Program Execution
Input (English): i n 3157 9959 8261 3021 1053 v b x 4671 q 2737 f 8371 s w 4599 7273 w j 5577 g c 9731 o 7215 k f k 8505 z g 6091 h u 8359
Output (English): b, c, f, g, h, i, j, k, n, o, q, s, u, v, w, x, z