Lens system configurations of the three 2L1S solutions: close I, close II, and wide solutions. In each panel, the small figurescomposed of concave curves represent the caustics and the curve with an arrow denotes the source trajectory. For each solution, the inset in the left panel shows the whole view including the lens positions (marked by blue dots) and the Einstein ring (dashed circle). Right panel: the zoomed-in view around the planetary caustic. The green empty circle on thesource trajectory represents the source for which the size is scaled to the caustic size. Lengths are scaled to the Einsteinradius and the coordinates are centered at the position of the primary of the planetary system. The lensing parameters corresponding to the individual solutions are listed in Tables 2–4.