Task: Program Execution
Input (English): o z h 3965 n 3009 173 997 3987 5799 2331 p x 897 8213 451 u t t 9917 4501 t c i w w u 2977 t b 4161 9281 w f 3137 5745 e 673 6363 h q x m 9505
Output (English): b, c, e, f, h, i, m, n, o, p, q, t, u, w, x, z