Intro
-------------------------------------------------------------------------------------
---------------------------------3-3-3-3-3-3-3-3-------------------------------------
--4---4----4----4------4------5-5---------------5-5------------4-4-4---2-2-----------
-0-0-0-0-0-1-2-2--6-6-6-------------5-5-5-5-----------9-9-9-9---------------0-0-0-0-0