In contours, one over three ¹²CO J = 3−2 channel maps are presented with 8 km s^-1 channel spacing, overlaid on the HST [NII] image published by Clyne et al. (2015) in color scale. As in Fig. 1, we detect some emission in between that from the inner ring and the crown-shaped structures. Contours are shown from 4 ×σ with a spacing of 15 ×σ (for σ = 1.5 mJy beam^-1 = 0.32 K) as a solid line, and at −4 ×σ as dashed gray lines. The synthesized beam is 0.̋26 × 0.̋19 in size with the major axis PA = −18°.