Task: Program Execution
Input (English): W, U, M, b, l, 2873, 4599, 335, d, 1837, 4491, 1551, 9439, 769, X, 5437, 5895
Output (English): W, U, M, b, l, d, X, 2873, 4599, 335, 1837, 4491, 1551, 9439, 769, 5437, 5895