Task: Program Execution
Input (English): W, a, 4631, 6685, 8963, b, a, 3261, D, 5251, W, 3953, 1589, 3019, 5739, p, 167, Y, 6711, I, 8427, a
Output (English): W, a, b, a, D, W, p, Y, I, a, 4631, 6685, 8963, 3261, 5251, 3953, 1589, 3019, 5739, 167, 6711, 8427