Task: Program Execution
Input (English): 9549, 6143, K, X, r, e, 6045, 757, 8865, q, Y, b, 8601, E, u, 6665, 1501, 8183, b, O
Output (English): 3, 4, 5, 6, 10, 11, 12, 14, 15, 19, 20