MDFs for the retrograde (top), non-rotating (middle), and prograde (bottom) stars but showing individual mergers in lines of different colours. The numbers in the top-left corner of each panel indicate the number of all mergers and the number of mergers, which contribute at least 5% of the total mass of the accreted stellar populations in a given E − L_z region. The MDFs are normalised by the total mass of accreted stellar populations. This figure shows that both retrograde and non-rotating accreted stars in the SNd-like region predominantly belong to just a few merger events.