Task: Program Execution
Input (English): U 299 B 1459 6195 3847 t A 3237 8957 1369 1525 3401 f j x 1653 x 3409 j a 509 9455 m I F u 765 9127 2309 4417 h N y Y f
Output (English): 2, 4, 5, 6, 9, 10, 11, 12, 13, 17, 19, 22, 23, 28, 29, 30, 31