Various SbS detected within the XCLASS 1330 group. Top panel: Substructure regions overlaid on the Pan-STARRS r-band image. The member galaxies with measured redshifts are also shown with the same colours as their respective region. The dashed red lines correspond to X-ray surface brightness contours (XCLASS private commun.). The small green circle indicates a galaxy with a redshift within XCLASS 1330, but not associated with a particular substructure. Bottom panel: Same, overlaid on the galaxy density contours computed from the photometric redshift catalogue by Duncan (2022).