.
                                   E
                            a    ag     a
                          g       er        g
                         e      E   a        e
                         r      g     e        r
                         E      r    E        E
                          a      a   g       a
                           g       e r       g
                             e      E      e
                                 r  a   r
                                     g
                                     e
                                     r