Task: Program Execution
Input (English): 2649 1501 a u j 7575 1359 A Q A 6453 w R 7733 3615 a k H 5663 M z 6743 7245 2643 A 5547
Output (English): 3, 4, 5, 8, 9, 10, 12, 13, 16, 17, 18, 20, 21, 25