Task: Program Execution
Input (English): F 4711 5703 B R 5151 7831 x 3945 k 7815 S I 3567 o H G G 5521 5765 d k q 9069 j x
Output (English): 4711, 5703, 5151, 7831, 3945, 7815, 3567, 5521, 5765, 9069