Task: Program Execution
Input (English): b x o c v 9565 6811 3255 2913 7135 4153 2855 7357 9093 7885 6789 1757 n 9649 567 g r f e l 8543 t c 9517 4507 w z 1449 a 3557 n
Output (English): a, b, c, e, f, g, l, n, o, r, t, v, w, x, z