Offset of the emission line and absorption features centres from the HeII systemic redshift. Red points are emission lines observed for Yggdrasil. Yellow is the Lyα emission line for Bifrost. Green is the CO(8−7) emission lines for Yggdrasil and Loke. Blue and purple are the centre of the absorption feature 2. The emitting components are distributed within ± 200 km s^-1 of the systemic velocity, while the absorbers are all blue shifted by ~350 km s^-1.