Parametric (rows 1 and 3) and pixelized (rows 2 and 4) lens modeling of the CO(3–2) emission detected in SPT 0125-47 (top two rows) and SPT 2134-50 (bottom two rows). The first column displays the dirty image generated by PYAUTOLENS, with contours at −3, 3, 4, 5, 6, 7, 8, 9, 10σ levels. Note: this is not a cleaned image, so structures may differ slightly from those in cleaned images. The second column presents the dirty model image from PYAUTOLENS, also with contours at −3, 3, 4, 5, 6, 7, 8, 9, 10σ levels. The third column shows the dirty residual image produced by PYAUTOLENS, with contours at −3, 3, 4, 5σ levels. The fourth column illustrates the image plane emission parametric/pixelized model of the data, produced by PYAUTOLENS, with the black line representing the critical line. The fifth column shows the source plane emission parametric+pixelized model of the data from PYAUTOLENS, with the black line indicating the caustic line. All images are centered around the ALMA phase center.