Task: Program Execution
Input (English): o i 8985 7193 e o 5205 v 1281 x 6585 8457 e f r k l m 7405 u 8319 7887 821 7419 1393 5497 4449 2417 9375 a u 5765 1991 a 4397 z x
Output (English): a, e, f, i, k, l, m, o, r, u, v, x, z