Left: time between successive mass-ejection episodes as a function of episode number occurred for the WD system and the MS system with α = 0.8. The nonmonotonic recurrence patterns observed in J0456–20 are reproduced in each case, as indicated by the points enclosed within the boxes. Right: probability density of the recurrence time. The solid black line shows the best-fitting Lèvy distribution for the fiducial MS system (Table 1). Additional lines show fits for models with different initial orbital parameters. For visual clarity, their corresponding histograms are omitted.