-----------------------------------------------------------------
-----------------------------------------------------------------
-----------------------------------------------------------------
---------7--7--7/9--9---------9--9--9/7--7-----------------------  X 4
---7--7--5--5--5/7--7---7--7--7--7--7/5--5-----------------------
---9--9-----------------9--9-------------------------------------
              
-----------------------------------------------------------------
-----------------------------------------------------------------
-----------------------------------------------------------------
---0-----3--3--0-----0-------------------------------------------  X 3
------3-----------4-----4--0-------------------------------------
-----------------------------------------------------------------