Task: Program Execution
Input (English): e z 743 6471 2393 2595 7511 p o x 4279 1465 4977 u 3309 9377 n w 3177 l 3225 3663 4973 m x f w 7441 6943 c 301 u r k a 5371 5237 q
Output (English): a, c, e, f, k, l, m, n, o, p, q, r, u, w, x, z