.
                              
                                       W
                                i      in      i
                              n       ne        n
                            n          r            n
                            e        W   i         e    
                            r        n     n        r
                            W       e    r       W
                              i        W  i        i
                               n       n n       n
                                 n       e       n
                                   e      r     e
                                      r   !    r