.
                                    H
                         ­   o     o r        o
                          r        l t i         r
                         t         c u            t
                        i        l       t          i
                        c       u      r          c
                         u       e    h         u
                          l         o  r          l
                            t        tic         t
                             u      ul       u
                               r     tu     r
                                  e  re  e