Task: Program Execution
Input (English): 8253, E, 1843, 9615, 8775, 8093, 2275, E, C, q, K, B, 1255, 737, t, 8309, 9055, n, 217, j, 1451, 5425, 6509
Output (English): 1, 3, 4, 5, 6, 7, 13, 14, 16, 17, 19, 21, 22, 23