Task: Program Execution
Input (English): 5339 r 7607 4253 r 167 1157 7841 7657 a n 1685 245 t x w e 6551 l f 9537 4605 4131 z x l 5273 1003 1233 5513 3605 x f 8343 p 319 s 1153 y a z 8993
Output (English): a, e, f, l, n, p, r, s, t, w, x, y, z