> >        ┏━┯━┯━┯━┯━┯━┯━┯━┓
> >        ┃　│　│　│　│　│　│　│　┃
> >        ┠─┼─┼─┼─┼─┼─┼─┼─┨
> >        ┃　│　│　│　│　│　│　│　┃
> >        ┠─┼─┼─┼─┼─┼─┼─┼─┨
> >        ┃　│　│●│　│　│○│　│　┃
> >        ┠─┼─┼─┼─┼─┼─┼─┼─┨
> >        ┃　│　│　│●│○│●│　│　┃
> >        ┠─┼─┼─┼─┼─┼─┼─┼─┨
> >        ┃　│　│　│○│○│○│○│　┃
> >        ┠─┼─┼─┼─┼─┼─┼─┼─┨
> >        ┃　│　│　│●│○│　│　│　┃
> >        ┠─┼─┼─┼─┼─┼─┼─┼─┨
> >        ┃　│　│●│　│　│　│　│　┃
> >        ┠─┼─┼─┼─┼─┼─┼─┼─┨
> >        ┃　│　│　│　│　│　│　│　┃
> >        ┗━┷━┷━┷━┷━┷━┷━┷━┛


参考：2002/01/11(金)18時39分28秒