Task: Program Execution
Input (English): U 2511 u 3711 8507 x b 5505 d 9729 X 421 8629 9677 3337 3105 3499 3323 x 6407 T M V w 1537 a 8997 K 2501 1547 9341
Output (English): 1, 3, 6, 7, 9, 11, 19, 21, 22, 23, 24, 26, 28