Task: Program Execution
Input (English): 9143, 8993, d, 9441, e, v, 7111, J, S, J, w, a, 9377, 8975, P, 9391, h, n, u, 8439, l
Output (English): 3, 5, 6, 8, 9, 10, 11, 12, 15, 17, 18, 19, 21