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