Task: Program Execution
Input (English): 7369 6577 f 441 4147 3843 7963 6879 e f f q 4247 2857 319 e 7535 l f 6879 8485 9369 2633 8519 7279 a q 249 x 6451 1761 1597 w n l
Output (English): a, e, f, l, n, q, w, x