Task: Program Execution
Input (English): 4171, y, j, 2029, e, c, v, x, 8595, 8013, 5437, d, 7667, 4411, r, z, f, d, 9057, g, t, b
Output (English): b, c, d, e, f, g, j, r, t, v, x, y, z