Task: Program Execution
Input (English): 2259 f X 4143 4721 k d 2803 8971 J 3769 g C 8073 7309 9799 2225 E 8273 S 2253 D L 355 r 2899
Output (English): 2, 3, 6, 7, 10, 12, 13, 18, 20, 22, 23, 25