Task: Program Execution
Input (English): u n 2283 a e q 4861 j 7807 5473 v 9265 x 2123 9851 g 8599 y l 85 z f 103 2421 9727 7693 6241 5499 c f e v o z s x z v 2737 e 717
Output (English): a, c, e, f, g, j, l, n, o, q, s, u, v, x, y, z