Doppler tomograms of Balmer emissions (Hα, Hβ, and Hγ) and He II emission, along with their trailed spectra. The upper panel shows the standard Doppler tomograms, the middle panel presents the inside-out projections, and the bottom panel shows the trailed input and reconstructed spectra. The velocities of the Roche lobes of the WD (shown as the black dashed closed line) and the donor star (shown as the black continuous closed line) components are overlayed on the tomograms. The velocities of the ballistic trajectory (shown as the black continuous line) and the magnetic part of the trajectory (shown as blue dashed lines) are superimposed.