Observed velocity channel maps of the C¹⁸O emission (contour) overlaid with the particle distributions (red dots) at the same line-of-sight velocities from our kinematical model with V_rel of 0.6 km s⁻¹ after an evolutionary time of 10⁴ yr. Contour levels are from 3σ and increase in steps of a factor of two, where 1σ is 5.5 mJy Beam⁻¹. The central velocity of each channel is labeled at the upper left corner in each panel in units of km s⁻¹. Blue filled ellipses show the size of the synthesized beam.