Task: Program Execution
Input (English): 909 2617 c 4753 p a Q O 6589 9263 T 9467 o 4671 1817 3371 3069 6265 L S o z P Y P Z W 2491 7693 5321 s 3159
Output (English): 3, 5, 6, 7, 8, 11, 13, 19, 20, 21, 22, 23, 24, 25, 26, 27, 31