.

                                      F
                            a       ar        a
                          r         Fa           r
                         F           r              F
                        a          F   a           a
                        r          r     F           r
                         F         a    r           F
                          a         F  a           a
                            r        r  F         r
                               F       a        F
                                  a    R    a

.
                                   F
                            u    ul        u
                          l        lF           l
                        l          ul             l
                       F           l               F
                      u         F    u           u
                      l          l      l             l
                       l          F   u            l
                        F         l    l           F
                         u          F           u
                           l         u          l
                              l       l        l
                                      l

.
                                   M
                            i      in       i
                         n       eM        n
                        e          in           e
                       M          e            M
                       i           M  i            i
                      n          n    e           n
                       e          M  i            e
                        M        n  e          M
                          i          M            i
                            n        i          n
                                e    n      e
                                       e

.
                                      A
                            b       bs        b
                          s         ur           s
                         u          d              u
                        r          A ­  b            r
                        d          s    u         ­   d
                       A          r     d            A
                        b          A    b         ­  b
                         s           s   u            s
                          u            r          ­   u
                            r          d           r
                               d     #!@     d
                                       &%
                                         =

.

                                       C
                              h      ha       h
                          a          ng           a
                         n            e               n
                        g           C     h            g
                        e           a      n            e
                        C           g      e            C
                         h           C    h            h
                          a           a   n           a
                            n            g            n
       ­                         g        e         g
                                   e     ●      e

.

                                 N
                         e     ev       e
                     v         er           v
                    e           N             e
                   r           e   v            r
                   N         e     r           N
                   e          N    e           e
                    v          v   e           v
                      e           r             e
                        r         N          r
                          N       e       N
                              e    V    e
                                    E
                                    R

.

                                     B
                             r      re       r
                          e         at          e
                         a           h            a
                        t          B    r           t
                        h         e     a          h
                        B         t      h         B
                         r         B    r          r
                          e         e  a          e
                            a         t           a
                              t        h        t
                                 h    ?     h
                                        ?