.

                                     E
                           a      a  r        a
                         r         l   y           r
                       l             B               l
                     y               i                 y
                    B                r                 B
                    i                 d                  i
                     r             E    a              r
                     d             r    l              d
                       E           y  B            E
                         a            i             a
                            r         r           r
                               l       d       l
                                       Y