Task: Program Execution
Input (English): g 9697 1167 2017 v f 5137 539 i 5637 w j 2701 e 1169 y i n m k 4265 1989 9109 r 7485 d 6563 8611 4483 7079 6521 7881 z 5511 1225 c h
Output (English): c, d, e, f, g, h, i, j, k, m, n, r, v, w, y, z