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