Model reproduction of the observed g-band surface brightness. Left panel: g-band image with g1–g5 foreground-light subtracted. The green regions show the pixels included in the simulation. Image systems are labeled as S1a.1-4, S1b.1-2, and S2.1-4. Middle panel: model reproduction of the image based on the median of the marginalized parameters. The tangential critical lines are shown in cyan for the source plane S1 (inner) and S2 (outer). Right panel: normalized residual between the model and the g-band image. The remaining foreground galaxies are masked; the residual is below 2σ for most of the model.