.

                                     L
                          W      o  v      W
                        a          e  L           a
                       r              o               r
                     W              v               W
                     a                e                  a
                     r             L     o              r
                    W            v     e             W
                      a             L   o             a
                       r               v               r
                         W           e           W
                              a        L        a
                                  r    o     r
                                        v
                                        e