x1|--------------------------------------------------------------------| 2|--------------------------------------------------------------------| 3|---9-8-9------------8---9-8-9-----11-14--9---8---9--9-8--8----8-9-8-| 4|--------9---7---9-------------9--------------------------9----------| x2 5|--------------------------------------------------------------------| 6|--------------------------------------------------------------------| 1|----------------------| 2|----------------------| 3|---9-8-9------------8-| 4|--------9---7---9-----| 5|----------------------| 6|----------------------|
