Task: Program Execution
Input (English): 6281, s, 3451, 5861, 4389, l, x, k, f, F, n, 4125, Y, 425, 3043, 8163, 5685, t, 2409, W
Output (English): 6281, 3451, 5861, 4389, 4125, 425, 3043, 8163, 5685, 2409