Continuum images at 222, 324, and 339 GHz in the 1st, 2nd, and 3rd column, respectively. The ¹²CO(J = 2–1), ¹²CO(J = 3–2), and ¹³CO(J = 3–2) brightness distributions integrated over the velocity range of the line in the 4th, 5th, and 6th column, respectively. Logarithmic scales are used in order to have the same scale for all objects. The image sizes are 5″ × 5″. The synthesised beams are shown in the lower left corner of each panel.