Incomplete boundary curve

Hi all, I am trying to get the intersecting region of this pattern.
Not sure what else I need to do to get this right. It’s not reading all the intersecting lines.
Thanks for the help guys!

Upload the gh to get help.

Sorry :frowning:
Here are the files
Thanks for the help!

boundary curves (23.9 KB)
boundary curves incomplete.3dm (13.1 MB)

Region Intersection component works for the closed curves.You can use Trim with Region.

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Thank you so much Tao