-----------------------------------------|
-----------------------------------------|
-----------------------------------------| x4
-------1---------1-------1----------1----|
----3----3--2-2-------1-----1--2-2-------|
-----------------------------------------|
----------------------------------------------|
----------------------------------------------|
-----------3-2-3-2-3--------------------------| x2
------4-5-------------------4-5---3-2-3-2-3---|
---3---------------------3--------------------|
----------------------------------------------|
