Task: Program Execution
Input (English): 3101 3923 b t Y W z e 6243 137 2211 O 8607 139 2211 P 8211 2149 7569 131 9987 5971 o B 3195 2459 9693 f 3521
Output (English): 1, 2, 9, 10, 11, 13, 14, 15, 17, 18, 19, 20, 21, 22, 25, 26, 27, 29