1-----------------------------------------------------------------------------------
2-----------------------------------------------------------------------------------
3-------7-9---------7-9-9-7-7-------7-9---------7-9-9-7-7-------7-9--------7-9-9-7-7
4--7-7---------7-7-7----------0-0-------0-0-0---------------------------------------
5-----------------------------------------------------------------------------------
6----------------------------------------------------------7-7-------7-7-7----------

1-----------------------------
2-----------------------------
3-------7-9---------7-9-9-7-7-
4-----------------------------
5-----------------------------
6--8-8-------8-8-8------------
This is only the main part.