Cumulative mass distributions at different times in simulations excluding (blue lines) and including mutual sink particle accretion (red lines). The fiducial criteria for sink particle creation were used in both simulations. At a time of t = 27 P_K (solid lines), the distributions in the two simulations are similar. After 30 P_K, however, the distribution in the simulation without sink particle mergers is overall steeper than the one in the simulation with mergers (dashed lines), and this discrepancy is even stronger after 40 P_K (dotted lines). The shape of the distribution in the simulation excluding mergers remains roughly the same.