Maps with the structures found using the procedure, e.g., simulations drawn from concentrated distributions. From left to right and top to bottom: radial with exponent E = 1.0, radial with E = 2.0, radial with E = 2.5, and Plummer, respectively. Noise stars are represented as grey dots, while the stars belonging to substructures are squares coloured in different shades of blue, purple, green, and yellow according to the small scale structure that they belong to. We note that only the central area of the clusters is shown, so the retrieved substructure is clearer.