Eight clumps identified for source 5 are marked with IDs 5.1.2, 5.1.1, 5.2, 5.3, 5.4, 5.5, 5.6.2, 5.6.1 and indicated on both sides of the critical line (red dashed line), labeled as group C (5c) and B (5b). The top-left inset shows on the same scale the least magnified image 5a, in which all the corresponding clumps can be recognized. The bottom-right insets show the continuum-subtracted narrow-band images extracted from MUSE around the wavelength of the most prominent high ionization emission lines.