-1---0---1---0---1---0---1---0---1------1------1------1------:
---3---3---3---3---1---1---1---1-----------------------------:
-----------------------------------2-3-2--2-3-2--2-3-2--2-3-2:
-------------------------------------------------------------:
-------------------------------------------------------------:
-------------------------------------------------------------:
or
---------------------------------------------------------------------:
-6--3--5--3--6--3--5--3--6--5--6--5---6------6-------6-------6-------:
---------------------------5--5--5--5--2-3-2---2-3-2---2-3-2---2-3-2-:
---------------------------------------------------------------------:
---------------------------------------------------------------------:
---------------------------------------------------------------------: