----------------4-5-6-3----------------------------------
------------------------4-5-6-3--------------------------
--------------------------------4-5-6-3------------------
----------------------------------------4-5-6-3-etc------ 
C
---------------------------------------------3-4-1-2-----
------------------------------------3-4-1-2--------------
---------------------------3-4-1-2-----------------------
------------------3-4-1-2--------------------------------
---------3-4-1-2-----------------------------------------
-3-4-1-2-------------------------------------------------