.
                                       r
                              a    a   g    a
                           g         e   r        g
                         e             a             e
                        r              g               r
                       a               e                a
                       g            r     a              g
                      e           g        e              e
                      r             r      a               r
                       a                g                 a
                        g               e                g
                         e              r               e
                           r             a            r
                              a          g         a
                                 g       e      g
                                     e   r   e
                                          a
                                          g
                                          e