Task: Program Execution
Input (English): 4175 i 6327 e n 1327 9873 u 4119 1349 6063 8939 5917 455 6725 5097 c n u b 8097 6567 n 5783 4513 8033 z 2619 7335 q 3959 f r 4043 m c 2313 w 9229 d 5355 3721 x
Output (English): b, c, d, e, f, i, m, n, q, r, u, w, x, z