Task: Program Execution
Input (English): 4731, r, H, 903, g, P, 6823, M, 3501, 4653, 239, 4659, 5715, 311, 9505, e, x, 2973, x, 6081, 253, 5575
Output (English): r, H, g, P, M, e, x, x, 4731, 903, 6823, 3501, 4653, 239, 4659, 5715, 311, 9505, 2973, 6081, 253, 5575