1-1-1-1-----1-1-1-1-
--------------------
1-1------1------1-1-
--------------------
1-------1-1-------1-
------1-----1-------
1---1---1-1---1---1-
------1-----1-------
1-------1-1-------1-
--------------------
1-1------1------1-1-
--------------------
1-1-1-1-----1-1-1-1-
--------------------
!
1-1-1---------1-1-1-
--------------------
1-1-------------1-1-
--------------------
1--------1--------1-
--------------------
------1-1-1-1-------
--------------------
1--------1--------1-
--------------------
1-1-------------1-1-
--------------------
1-1-1---------1-1-1-
--------------------
!
1-1-------------1-1-
--------------------
1-----------------1-
--------------------
--------------------
--------------------
-------1-1-1--------
--------------------
--------------------
--------------------
1-----------------1-
--------------------
1-1-------------1-1-
--------------------
!
1-----------------1-
--------------------
--------------------
--------------------
--------------------
--------------------
---------1----------
--------------------
--------------------
--------------------
--------------------
--------------------
1-----------------1-
--------------------
!