Time-slice diagrams of the ten narrow slits (cut2−cut11) in 193 Å. s = 0″ and 96″ in the y-axis signify the top-left and bottom-right endpoints of slits. The short solid lines denote the 34 manually selected bright features signifying the leftward and rightward transverse rotation of the jet. The short dotted lines in the third panel from the top denote the four manually selected bright features signifying the precursor disturbances adjacent to the jet axis. The dashed ellipse in the fifth panel outlines the boundary of dimming. The horizontal and vertical double-headed arrows in the seventh panel measure the period (427 s) and double amplitude (22 Mm) of rotation.