xe-------------------------------------------| b-------------------------------------------| g-6---6----4---4-------6---6----4---4-------| d-6---6----4---4-------6---6----4---4-------| x4 a----------------4-4------------------4/64--| e-------------------------------------------| e--------------------12*------------------| b-----------------------------------------| g---6-6---4-4-----------------------------| d---6-6---4-4-----------------------------| x1 a---4-4---2-2--4/6------------------------| e-----------------------------------------|