==========================================
= @                                      =
=                                        =
=                                        =
=R                  R             R      =
=                                        =
=                                        =
=   r             r           r          =
=                                        =
=                                        =
=                                        =
=         r             r           r    =
=                                        =
=                                        =
=                                        =
=r   r                     r             =
= EEE          EEEEEEEEEEEE         EEEEE=
=                                        =
=                                        =
=r    ccccccc r           r bbbbbbbb     =
=     ccccccc               bbbbbbbb     =
=     ccccccc               bbbbbbbb     =
=     ccccccc        u      bbbbbbbb     =
=                                        =
=                                        =
=    u     E         L       E      u    =
=         E                    E         =
=         E                    E         =
=         E                    E         =
=         E                    E         =
=S    S    G    G    G    G    S    S    =
==========================================