(repeat two times)
|------------------------12----------|---------------------|
|--------10-10-10-10-b12---r12-10----|---------------------|
|--10/12--------------------------11-|-------7-5---5-------|
|------------------------------------|---7-9-----7---------|
|------------------------------------|-9-------------------|
|------------------------------------|---------------------|
|---------------------|
|-b7-5----------------|
|------7-b7-5---5-----|
|-------------7-------|
|---------------------|
|---------------------|