ALMA velocity of the maximum value of the spectrum (peak velocity) images of CH₃OH (6_1,5−7_2,6 v_t=1) (top left panel) and CH₃CN (12₇−11₇ v_t=1) (top right panel). A filled ellipse in the lower left of each panel shows the FWHM beam sizes. The contours overlaid in the two panels are the same as those in the left panel of Fig. 1. The blue and red arrows indicate the symmetry axis of the jet. The filled squares denote the peak positions of the two cores which are labeled as MM1 and MM2. A dashed line in each of the top panels illustrates the P-V cut perpendicular to the jet. The lower panels show the P-V diagrams of CH₃OH (6_1,5−7_2,6 v_t=1) (left) and CH₃CN (12₇-11₇ v_t=1) (right). The contours all start from 28 mJy beam⁻¹ and increase in steps of 28 mJy beam⁻¹.