Circularisation radius of the inner and outer orbit of each system at the onset of mass transfer initiated by the primary star. The colour code refers to the ratio between the final and initial eccentricity of the inner orbit. Their distribution is also presented as a histogram in the smaller plot. The light-coloured systems () at small circularisation radii of the inner orbit have been completely circularised due to tidal dissipation. The dark-coloured systems () at comparable inner and outer circularisation radii have been subjected to three-body dynamical effects. The evolution of the other systems has hardly been affected by either tidal effects or three-body dynamics.