==========================================
= @                                      =
=                                        =
=                                        =
=     L                           L      =
=                                        =
=            bbbbbbbbbbbbbb              =
=            bbbbbbbbbbbbbbb             =
=            bb            bb            =
=            bb             bb           =
=            bb             bb           =
=            bb             bb           =
=            bb             bb           =
=            bbbbbbbbbbbbbbbb            =
=            bbbbbbbbbbbbbbb             =
=            bb     bb                   =
=            bb      bb                  =
=            bb       bb                 =
=            bb        bb                =
=            bb         bb               =
=            bb          bb              =
=            bb           bb             =
=                                        =
=                                        =
=    B                              B    =
=                                        =
=                                        =
=                                        =
=                                        =
=                                        =
=G    G    G    G    G    G    G    G    =
==========================================