Task: Program Execution
Input (English): y, 641, 9379, 649, j, f, q, d, 4453, 6951, 8145, 4423, 5637, 2529, 1713, 4189, 2333, l, x
Output (English): 641, 9379, 649, 4453, 6951, 8145, 4423, 5637, 2529, 1713, 4189, 2333