+-0-------0-------+
+-7-------7-------+
+---x-x-x---x---6-+
+-------------7---+
+-----------------+

Part I:
                                  +-3-+
+-0-----0------0---+----------0-----0---+
+---7------0-----0-+------------------5-+
+-----9------6-----+-2---2-6----x-6-----+
+------------------+---4----------------+
+------------------+--------------------+

                              +-6-+
+-------7--------7-+---9---0--------------+
+-5---5----7---7---+------------------0---+
+---6--------7-----+-----9----6=7=6-----6-+
+------------------+----------------7-----+
+------------------+-0--------------------+

                                  +-3-+
+-0-----0------0---+----------0---------+
+---7------0-----0-+----------------0---+
+-----9------6-----+---0---2----x-----6-+
+------------------+-7---4--------7-----+
+------------------+--------------------+

                                  +-+
+-0-----0----0-----+------------------0-+
+----------0-------+--------------0-----+
+-----6----------0-+------------x---6---+
+---7----------7---+-4-0-2-4--0---------+
+------------------+--------------------+

               +-3-+                +-3-+
+-------0------0-----+----------0-----0---+
+---7------0-------0-+------------------4-+
+-7---9------x---6---+-2---2-6----x-6-----+
+--------------------+---4----------------+
+--------------------+--------------------+

                     +-3-+      +-6-+
+-------7--------7-+-----9---0--------------+
+-5---5----7---7---+--10----------------0---+
+---6--------7-----+-------9----6=7=6-----6-+
+------------------+------------------7-----+
+------------------+-0----------------------+

+-0-----0----0---0-+----------0-------+
+---7----------0---+------------------+
+-----9----6-------+-2----------x---6-+
+------------------+---4-3-4------7---+
+------------------+------------------+

+-0-----0----0-----+----------------7-+
+----------0-------+------------------+
+---7-6----------0-+------------x-----+
+--------------7---+-4-0-2-4--0---7---+
+------------------+------------------+

Part II:
                     +-3-+          +-3-+
+-------7----------+-------0------0-------+
+-----7------------+-7=8=7---7--------0---+
+-x-x--------x-9---+------------9-------6-+
+------------------+----------------7-----+
+----------0-----0-+----------------------+

                     +-3-+
+-0-----0--------5-+-------0------7-----+
+----------5---5---+---7-----7------7---+
+---x-6------6-----+-----9------9-------+
+------------------+--------------------+
+------------------+-0----------------0-+

+----9---------9---9-+---9--------0-----+
+-10---10-9--8---8---+-7---7-6------0---+
+--------------------+----------9-----6-+
+--------------------+------------------+
+--------------------+------------------+

           +-3-+
+-0---0--------0-----+----------------7-+
+----------0---------+------------------+
+---6--------6-----0-+------------x-----+
+-------7--------7---+-4-0-2-4--0---7---+
+--------------------+------------------+

                     +-+
+-------7----------+-------0------0-----+
+-----7------------+-7=8=7---7------0---+
+-x-x--------x-9---+------------9-----6-+
+------------------+--------------------+
+----------0-----0-+--------------------+

+-0-----0------0---+-----0------7-----+
+----------0-------+-7-----7------7---+
+-----2------6---9-+---9------9-------+
+---4--------------+------------------+
+------------------+----------------0-+

+----9----9----9---9-+-----0------0---0-+
+-10---10----8---8---+-7--------7-------+
+--------------------+---9---9------9---+
+--------------------+------------------+
+--------------------+------------------+

+-----0--------0---+------------------+
+-0--------7-----0-+------------------+
+---6---9----9-----+-2----------x-x-x-+
+------------------+---4-2-4--0-------+
+------------------+------------------+