--------1111111111111111111--------
-------111101111111111101111-------
------11100000111111100000111------
-----1111000001110111000001111-----
----111111101111000111101111111----
---11111111111100000111111111111---
--1111111000000000000000001111111--
-111101111000000000000000111101111-
11100000111000000000000011100000111
11100000111000000000000011100000111
-111101111000000000000000111101111-
--1111111000000000000000001111111--
---11111111111100000111111111111---
----111111101111000111101111111----
-----1111000001110111000001111-----
------11100000111111100000111------
-------111101111111111101111-------
--------1111111111111111111--------