CO (7−6) sample of spectra at selected positions in HH211. The spectral resolution is 1 km s^-1. Upper left corner of each panel indicates the position at which the spectrum was taken. The positions are also indicated in Fig. 9. The secondary peaks at high velocities revealed by the CO (6−5) transition are not detected in CO (7−6). The absorption feature at the cloud velocity, as in the case of the CO (6−5) emission, most likely comes from the contamination of the reference position.