Task: Program Execution
Input (English): b 1817 b 7079 9425 D 4247 4837 7233 M 7531 19 V Y y j 4787 o z 5209 781 W g 1683 3995
Output (English): 2, 4, 5, 7, 8, 9, 11, 12, 17, 20, 21, 24, 25