Task: Program Execution
Input (English): 4159 l d f 9591 u 3009 6639 z 8373 e 2713 747 i a 3699 u 1347 v 6493 4291 y e q k t d 6731 1219 n g z t 6439 w t 4403 5665 l 8887 p
Output (English): a, d, e, f, g, i, k, l, n, p, q, t, u, v, w, y, z