|----------------------------------------------------------
|----------------------------------------------------------
|----------------------------------------------------------
|-----------2--------------------------2-------------------
|--2--4--5-------2------------2--4--5-------2--------------
|----------------0--------------------------0--------------
|--------------------------------
|--------------------------------
|--------------------------------
|----------2----------7--5~~-----
|-2--4--5-------2----------------
|---------------0----------------
|----------------------------------------------------------
|----------------------------------------------------------
|----------------------------------------------------------
|------------2--5--4-----7--4-------------------2----------
|---2--4--5-----------5--------5--7----2--4--5-------2-----
|----------------------------------------------------0-----
|