
                      1111cc
                    11cc111111
                   11111111111c
                  111c11cc1c1111
                  cc1111cc1c1111
                  1111c1111111c1
                  1111c111111111
                  111111cc11c111
                  c11c111111111c
                   c111111c111c
                    cc111111cc
                      cccccc