Task: Program Execution
Input (English): x e c i 8931 3243 2541 4091 j 3951 i 1767 o 6763 a f 7221 k q 8633 2339 5037 u j t 3241 z 7431 i i 9481 9935 s 6649 a v n
Output (English): a, c, e, f, i, j, k, n, o, q, s, t, u, v, x, z