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