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    1. *BF(267)*
    2. ->+>+>+>++>+>->>>>>,+[->++<],,,>
    3. C[
    4.  ** *bcdeaF   bcdeaF  _ ?C
    5.  -[->+<]<,
    6.  ** *bcdeaF   bcdeaF  _ * C
    7.  <<+[-
    8.   * add 48 to a *
    9.   <<++++++[-<<++++++++>>]
    10.   * print a if F *
    11.   <[+<.>]
    12.   * move b and add b*2 to a *
    13.   <<<<<[->>>>++>+<<<<<]
    14.  <+]
    15.  ** ! cdeAb    cdeAb    * C
    16.  ++++++++++.>->>>>+++++
    17.  <<<+[-
    18.   >>>--->>++++++++++
    19.   ** AbDR  cdeA **
    20.   <<[->>-[>+>]>[+[-<+>]>>>>>>+<<<<]<<<<<]
    21.   * set F to D move R to A *
    22.   >>,>[-<<<+>>>]
    23.  >>>+]
    24.  * clear the last F if the last b is zero *
    25.  +<<<<<[>>]>,[+>-]
    26.  * carry handling *
    27.  >>>-----[<[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>>]
    28. <]