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Fig. A.2

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Position-velocity diagrams of 12CO for a) MON R2, b) S156, c) DR17/L906, and d) M17/M18. The positions for 12CO are the same as Fig. 2. For the MON R2, S156, and M17/M18 regions, contour levels are 3 to 8 in steps of 1 K. Contour levels are 1.3 to 6.3 in steps of 1 K for the DR17/L906 region.

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