Task: Program Execution
Input (English): 6161 n 8013 3597 W O 3375 7639 Y 8379 3389 7791 7495 Y J J I 2007 s 7471 D 627 X J 3589 b P W l b b u 1537
Output (English): 1, 3, 4, 7, 8, 10, 11, 12, 13, 18, 20, 22, 25, 33