Task: Program Execution
Input (English): 7217 z j 833 7941 p u x v q 3859 9699 l 9103 x 6247 v 1603 5839 e c 6551 t 5137 8745 7889 3797 d 9541 a 547 c p 4023 3863 t 6299 4157 2059 4163 5453 5327 4837
Output (English): a, c, d, e, j, l, p, q, t, u, v, x, z