.
                                   lucky
                      ­         lucky lucky
                          lucky lucky lucky
                           luckyluckylucky
                ­           luckyluckylucky
                           luckyluckyl­ucky
                           luckyluckylucky
                 ­          luckyluckylucky
                           luckyluckylu­cky
                           luckyluckylucky
                  ­         luckyluckylucky
                           luckyluckyluc­ky
                           luckyluckylucky
                   ­        luckyluckylucky
             lucky lucky luck y lucky  lucky
           lucky lucky lucky  luck y    lucky        
            lucky lucky  luck   l u c k y lucky      
                   l u c k y               l u c k y