--------------------------|
--------------------------|
---3~~--5-----------------|
----------5---3---5-------|  x2
--------------------------|
--------------------------|


-------------------------------------------|
-------------------------------------------|
---3~~--5----------------------------------|
----------5---3---5------------------------|
--------------------5----3---5---3--5------|
-------------------------------------------|


--------------------------------------------------|
--------------------------------------------------|
--------------------------------------------------|
-------------------------------------3---5---3----| x4
-----5--5----5---5---5---5----5------1---3---1----|
-----3--3----3---3---3---3----3-------------------|


--------------------------------------------------|
--------------------------------------------------|
-------------------------------------3---5---3----|
-----5--5----5---5---5---5----5------1---3---1----| x2
-----3--3----3---3---3---3----3-------------------|
--------------------------------------------------|


--------------------------------------------------|
--------------------------------------------------|
--------------------------------------------------|
-------------------------------------3---5---3----| x2
-----5--5----5---5---5---5----5------1---3---1----|
-----3--3----3---3---3---3----3-------------------|


--------------------------------------------------|
--------------------------------------------------|
------------------------------------5----5--------|
-----7--7----7---7---7---7----7-----3----7--------|
-----5--5----5---5---5---5----5-------------------|
--------------------------------------------------|


--------------------------------------------------|
--------------------------------------------------|
-------------------------------------3---5---3----|
-----5--5----5---5---5---5----5------1---3---1----|
-----3--3----3---3---3---3----3-------------------|
--------------------------------------------------|


--------------------------------------------------|
--------------------------------------------------|
--------------------------------------------------|
-------------------------------------3---5---3----|
-----5--5----5---5---5---5----5------1---3---1----|
-----3--3----3---3---3---3----3-------------------|


--------------------------------------------------|
--------------------------------------------------|
--------------------------------------------------|
--------------------------------------------------|
-----5--5----5---5---5----------------------------|
-----3--3----3---3---3----------------------------|


-------------------------------------------|
-------------------------------------------|
---3~~--5----------------------------------|
----------5---3---5------------------------|
--------------------5----3---5---3--5------|
-------------------------------------------|    refrain to top