Task: Program Execution
Input (English): v q 4857 b 6643 6551 e f 7373 w 2881 c 6189 3923 m w 9071 4899 5987 5491 j 5109 o 8565 n a i 8363 8411 8693 q 4261 6861 l k x 7899 4909 l x d
Output (English): a, b, c, d, e, f, i, j, k, l, m, n, o, q, v, w, x