Task: Program Execution
Input (English): 543 1663 8121 8655 7169 h q B 613 4593 8833 t Y h 4917 3267 5405 X O 3441 9485 B 3987 S r 2883 8443 8891 1691 d O Z I C r
Output (English): 1, 2, 3, 4, 5, 9, 10, 11, 15, 16, 17, 20, 21, 23, 26, 27, 28, 29