2D view of a pseudo-disc forming around the second core at three years after its onset as a result of the same initial conditions and at the same time snapshot as Fig. A.4. The gas velocity streamlines indicate material falling onto the pseudo-disc and outward transport within the pseudo-disc, due to the outflowing gas from the vicinity of the unresolved protostar. At this stage the vortical flow within the pseudo-disc has already been destroyed by the outflow.