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