Task: Program Execution
Input (English): 1143 v 4819 8137 v n a e q 2241 z 4913 n 9399 k 5761 j 5601 p 869 q r 8979 e i e 4827 5661 w u g b b 3647 883 v 4193
Output (English): a, b, e, g, i, j, k, n, p, q, r, u, v, w, z