Top: period versus eccentricity diagram for systems in our sample. Blue circles represent the SB1 systems, orange diamonds the SB2s. Bottom: period versus primary RV semi-amplitude diagram for systems in our sample. The colour code is the same as in the top panel. We also plotted the parameter space that corresponds to the predictions of Langer et al. (2020) for case A (blue) and case B (red) mass transfers.