Task: Program Execution
Input (English): 647, 4235, 7417, b, j, 1989, W, 3577, S, B, 9977, O, 2455, C, g, 9089, 699, 4021, T, e, F, l, 789
Output (English): 1, 2, 3, 6, 8, 11, 13, 16, 17, 18, 23