Left: images of CO (4−3), (2−1), and their nearby continua, extracted from the optimal-resolution cubes (i.e., 0.4′′× 0.4′′ beam in band 8 and 0.56′′× 0.53′′ beam in band 6). The line fluxes in mJy/beam were averaged over the −100 < V < 100  km s^-1 range. Crosses indicate the locations of the nucleus and the two radio lobes, as seen in the CO(2 − 1) continuum (see Sect. 2 for the coordinates). Right: maps of the amplitude, velocity, and velocity dispersion of a Gaussian line-profile fit. All panels are centered at the nucleus, at 20:52:02.37 −57:04:07.6. They have a field of view (FOV) of 7′′× 7′′.