|--------------------------------------------5---|

          |-------5-------------7----------5-------------5-|

          |-----4---4---4-----4----------4---4---4---------|

          |-4h6-------6---6h7--------4h6-------6---6h7-----|

          |------------------------------------------------|

          |------------------------------------------------|



     |-----------------------------| |--------------------------|

     |-----------------------------| |--------------------------|

     |-----------------------------| |--------------------------|

     |-----------------------------| |--------------------------|

     |-5-6-7---------5--6-7--5-6-7-| |-----2--5-6-7-5-----------|

     |-------0-5-6-7---------------| |-3b--0----------7-0-7-6-5-|