------------------------------------------------------------------------------ ---------------------6-------------------------6-----------------------6------ ------------------------5-------------------------5-----------------------5--- -----3-----3--3------3-----------3-----3--3----3----------3-----3--3---3------ ------------------------3-------------------------3-----------------------3--- -1---------------------------1------------------------1----------------------- ---------------------------------|-------------------------------------------- ---------------------------------|-------------------------------------------- -------3---3----------6----6-----|-------------------------------------------- ---------------------------------|-------------------------------------------- -1---1---1-----4---4-----4-------|-------------------------------------------- ---------------------------------|--------------------------------------------