Overview of the intensity distribution of the analysed components. Top, middle, and bottom rows correspond to components A, B, and C, respectively. Velocity ranges of integration are (35, 38), (45, 48), and (69, 72) km s⁻¹. Spectral lines are indicated above the top maps. Equatorial coordinates are relative to the star position. The colour scale is the same for all three components of a given molecule, and is indicated in the top panels in units of K km s⁻¹. Contours are 45%, 60%, 75%, and 90% of the peak values. The white circle sketches the position and size of the IR nebula. The HPBW is indicated in the bottom-left corner of the CO(2-1) map of component C. The white lines plotted onto the ¹³CO maps indicate the direction of the PV plots of Fig. 5.