Task: Program Execution
Input (English): 3911 K 5173 3467 L j h w A 6039 4433 A Y 8531 L X l 8755 2413 Y B I 9791 4539 H G
Output (English): 2, 5, 6, 7, 8, 9, 12, 13, 15, 16, 17, 20, 21, 22, 25, 26