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                 ..                        ..............
                ....                      .............
                .....vv                   ...............
                 ...vvvv                ..................
                  ....vv                ...................
                    ..vvv            .......................
                     ...vv.          ...........).........))
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                       .......       ...........((.....(...(.
                         ......      v......((.....)((.))(.((
                          ......    vv......)((....)(.))(..)(
                           .......  vv.......))((.((.~~~~~))(
                             ......vvv........)))..(~~~~~~~~~
                              ....................~~~~~~~~~~~~~~~~
                                .................~~~~~~~~~~~~~~~~~~~
                                    .........).((~~~~~~~~~~~~~~~~
                                    .........).(~~~~~~~~~~~~
                                    .........)((~~~~~~~~
                                    .........(.~~~