|-----------------------------------------------------|x2
|------------------2-2--------------------------------|
|----------2-2-4-4-----4-4-2-2------------------------|
|--0-0-3-3---------------------3-3--------------------|

|------------------2-2--------------------------------|x1
|----------2-2-4-4-----4-4-2-2------------------------|
|--0-0-3-3---------------------3-3--------------------|
|-----------------------------------------------------|

|-----------------------------------------------------|x1
|------------------2-2--------------------------------|
|----------2-2-4-4-----4-4-2-2------------------------|
|--0-0-3-3---------------------3-3--------------------|

|---------------------2-------------------------------|x1
|-----44-66/4-----2-4---4-2-----------2---------------|
|--22---------0-3-----------3-----2-4---4-2-----------|
|-----------------------------0-3-----------33-0------|

Do this and make small varyations to keep it interesting