.
                                     W
                           h       h e        h
                        e           n I            e
                       n            g e              n
                      I                t        ­          I
                     g                b                  g
                     e              a    c               e
                      t             k     u              t
                       b           p     y             b
                        a           o    u'           a
                          c          r   e           c
                            k          F           k
                              u        U       u
                                  p    C    p
                                         K
                                         E
                                         D