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

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