Task: Program Execution
Input (English): 1623 5507 631 P 6393 4131 877 7253 3545 o 509 H t H C 413 5907 z 6347 h L 2311 P Q y 8023 B h 1575 B u R s 1587 7627 3577 w 1835 5563
Output (English): 4, 10, 12, 13, 14, 15, 18, 20, 21, 23, 24, 25, 27, 28, 30, 31, 32, 33, 37