Semimajor axis over time evolution for the planetary system. The evolution of a planet is linked via the grey line and the size of the dots indicate the mass of the planets every 10 ky. The color of the planets indicates their pebble mass fraction M_peb/M_P. The horizontal lines are drawn at 0.35 Myr, 1 Myr, and 3.5 Myr and show the moments at which most currently active planets are accreted by the host star or were subject to mergers. Thus we find four distinct generations of planet formation.