Task: Program Execution
Input (English): x n k a k d 587 6231 w f a r f u 5903 m f a n 2443 3989 7429 1559 4305 8527 i h 9155 1879 k 7523 d b b c 6355 9361
Output (English): a, b, c, d, f, h, i, k, m, n, r, u, w, x