~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^~~~~~~~
~~~~~~~bpp?ppppppppppppppp^ppp?^?pb~~~~~~~
~~~~~~~bp^^ppppppp?ffppppp^pppp^ppb~~~~~~~
~~~~~~^^^^^^^fffffffpppppp^^^p^^fffb~~~~~~
~~~~~~bff?fff^^^fffffff?pp?~p^^^^fffb~~~~~
~~~~~bffffffff?^ff?fffpppp~~pp^^^ffb~~~~~~
~~~~~bfffffff^^^ffffppppp~~~pp?^^ffb~~~~~~
~~~~~bff?ffffff^fffppp?pp~~~ppp^^ffb~~~~~~
~~~~~~?bbbbff^?fffdddppppp~~ppp^^ffb~~~~~~
~~~~~~~~~bpppppppddddppppp~p^^^^fb~~~~~~~~
~~~~~~~~~bpppffppdd?pp^^bppp^^^fb~~~~~~~~~
~~~~~~~~~bppffffp^^bb^^~~b^^?^^fb~~~~~~~~~
~~~~~~~~~~bp?ffp^b~~~~~~~~bppbfb~~~~~~~~~~
~~~~~~~~~~bppppb~~~~~~~~~~~bb~~~~~~~~~~~~~
~~~~~~~~~~~bb?b~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~