Task: Program Execution
Input (English): C, 6697, 4893, H, 4819, 7165, k, F, 5439, W, Y, E, 3243, D, 9725, C, 8387, 9237, 1469, 2403, d, 3175, 6637, Z
Output (English): 1, 4, 7, 8, 10, 11, 12, 14, 16, 21, 24