Task: Program Execution
Input (English): 4309 5677 8119 m y u O 8309 5797 1807 8661 5017 6107 6863 6985 V P 573 N 5235 J 1231 535 j p 7997 f T 1037
Output (English): 4, 5, 6, 7, 16, 17, 19, 21, 24, 25, 27, 28