|---------------------------------------|
|---------------------------------------|
|---------7--(b9)-7-----------------------|
|---10-------------10---7---10----------|
|--------------------------------10-----|
|---------------------------------------|

|---------------------------------------|
|---------------------------------------|
[---------------------------------------|
|--7--(b9)-10--------(b9)-10-------(b9)-10----|
|---------------10-----------8----------|x2
|-------------------------------------8-|