* g|-----9--10--11----8-65-----678------87--76---------| d|---------------------------------------------------| a|-8-------------8--------8------------------8-------| d|---------------------------------------------------| (above and below) f faster part g|-----9-10-------87---------67---------76---------| d|-------------------------------------------------| a|--8--------8----------8----------8---------------| d|-------------------------------------------------| heavier part g|---------------------------------------------| d|---------------------------------------------| a|---------------------------------------------| d|--0-9--10--11-0-8-6-5-0--6-7--8--0--8--7--76-| keep repeating this