Column density in three planes of coordinate system (width: 1.6 × 10⁴ au; left: yz-plane, middle: zx-plane, right: xy-plane) at time t = 20 × 10³ yr after formation of primary A. The colored dots illustrate the origin and dynamics of accreting gas of the individual sinks. Black (cyan, red) dots represent particles that are located within a distance of 30 au from the primary A (B, C) at t = 90 × 10³ yr.