Task: Program Execution
Input (English): a 6551 3159 x 2345 O f c k p h 9725 f 9021 2995 u 3239 4269 L x 8057 p r 1055 D 9337
Output (English): 6551, 3159, 2345, 9725, 9021, 2995, 3239, 4269, 8057, 1055, 9337