Task: Program Execution
Input (English): W, u, 2645, 2109, j, 4603, 8591, 3465, I, l, 139, 6467, 6743, v, D, f, 5229, o, 8737, M, 1499, 9991
Output (English): 3, 4, 6, 7, 8, 11, 12, 13, 17, 19, 21, 22