xe|----3--3--3--3--3-----3---3---3---3---3------8---8----| B|-----4--4--4--4--4-----3---3---3---3---3------9---9---| G|---5--5--5--5--5--5-4---4---4---4---4---4-10---10--10-|and so on D|------------------------------------------------------| A|------------------------------------------------------| E|------------------------------------------------------|