Task: Program Execution
Input (English): 7271, Y, 1171, j, 425, u, 6153, m, 3543, x, X, 4023, 667, 1771, 4745, H, 8163, e
Output (English): 7271, 1171, 425, 6153, 3543, 4023, 667, 1771, 4745, 8163