Gaussian fitted extracted spectra of [FTK–MC] in ¹²CO (top) and ¹³CO (middle) for the gas associated with regions [FTK–MC]J2108 (black solid line) and [FTK–MC]HS (blue solid lines; cf. Fig. 4). The three components C₁ (left), C₂ (middle), and C₃ (right) mentioned in Figs. 2, 3, and A.1 are plotted. The corresponding spectra with the common C₂ (–3 km s⁻¹) subtracted are shown in the right panels. The DRAO HI 21 cm spectra for [FTK–MC]J2108 and [FTK–MC]HS is show at bottom. The shaded regions fill the LSR velocity range (–20 to 8 km s⁻¹) of [FTK–MC] for ^12, 13CO. They show the corresponding lines associated only with the gas of [FTK–MC].