stroke down and up continusly in standerd tuning

|--------------------------------------------------------------------------------
|--------------------------------------------------------------------------------
|--------------7-7-7-------------------------------------------------------------
|--9-9-9-5-5-5-7-7-7-7-7-7------------------------------------------------------x2
|--9-9-9-5-5-5-5-5-5-7-7-7-------------------------------------------------------
|--7-7-7-3-3-3-------5-5-5-------------------------------------------------------