Task: Program Execution
Input (English): a 9627 5347 Y 2919 r 5921 D 2081 8363 1283 5193 X R D 4875 q Q 5009 O A Z 5665 4475 d c 3861 I
Output (English): 1, 4, 6, 8, 13, 14, 15, 17, 18, 20, 21, 22, 25, 26, 28