Configurations of the close (upper panel) and wide (lower panel) 2L1S solutions found from the modeling conducted by excluding the data in the R₃ deviation region, marked in Fig. 2. In each panel, the line with an arrow indicates the trajectory of the source motion, the concave closed curve is the caustic, the dashed circle denotes the Einstein ring, and the two blue dots marked by M₁ and M₂ indicate the positions of the lens components. The zoom-in view of the central magnification region is shown in the inset. The grey curves encompassing the caustic represent the equi-magnification contours.