Task: Program Execution
Input (English): 7551 989 s 9097 Q k 5049 h U u T L 8947 3187 5539 a k 9273 4815 2627 2029 3695 Y 5801 2959 r
Output (English): 1, 2, 4, 7, 13, 14, 15, 18, 19, 20, 21, 22, 24, 25