1----------------------------------------------------------------------
2-----------------------------------------1-1-1------------ 3-3-1------
3---------------------------------0-0-0-0-------2-3-3---2-3-------3-2--
4----0-0-2-3-5-5-3-5-7----0-0-0-0--------------------------------------
5--0--------------------0----------------------------------------------
6----------------------------------------------------------------------
1-----------------------------
2----1------------------------
3------3-3---2-0-0------------
4--0-------0---------3-2-2----
5------------------1----------
6-----------------------------