Task: Program Execution
Input (English): 6503 n 4747 6301 2119 q u g 1017 a n 3943 9627 2945 8007 a v h 9113 5103 u e 79 4665 r 3803 6249 c o w n 9751 k i a o u k l k 2585 6445 3599
Output (English): a, c, e, g, h, i, k, l, n, o, q, r, u, v, w