.
                                       D
                              r     r   e       r
                           e        a  m          e
                         m           s               m
                         s             m               s
                        m          a   y              m
                        a            c   o               a
                        y            m e               y
                         c             t  r              c
                           o            u              o
                               m       e         m
                                    e           e