Three examples of the models from the last four families. In the upper panel is the model from the velocity range, where the LNM is most clearly visible in Fig. 4. The middle panel corresponds to the velocities, close to the limit |v_c | ≤ 8 km s⁻¹, used for the discussions in the present paper and the lower panel illustrates the situation at extreme velocities |v_c | = 25 km s⁻¹, used for Fig. 7.