<image>As shown in the figure, draw six rays with endpoint O: OA, OB, OC, OD, OE, and OF. Then, starting from a certain point on ray OA, mark points on the rays in a counterclockwise direction and connect them. If the points marked on each ray are numbered sequentially as 1, 2, 3, 4, 5, 6, 7, 8, ..., then the 2013th marked point is on ray _________. __