Task: Program Execution
Input (English): 8477, a, E, j, W, 2383, 853, 4587, 3667, 5563, 9149, m, U, g, 7385, J, 4465, U, b, 3365, G
Output (English): 2, 3, 4, 5, 12, 13, 14, 16, 18, 19, 21