Detection of CO emission lines toward two intervening (top panels) and six associated absorbers obtained with the IRAM-30 m. The vertical scale is T_mb in mK. The various CO transitions are indicated at the upper right of each panel. The zero of the velocity scale corresponds to z_abs in Table 1. The velocity range over which H I 21 cm absorption is detected is indicated by an horizontal bar at the bottom of each panel. The detection toward 1946+708 is only tentative.