Task: Program Execution
Input (English): 7773 n q O 7697 W 5401 491 s h 6453 8291 t 2559 2831 863 f I 3523 5993 w 7237 X f G
Output (English): 2, 3, 4, 6, 9, 10, 13, 17, 18, 21, 23, 24, 25