Problem with weaving patterns

Hello all,

I am having problem with this specific weaving pattern. 

The main body of my script works well, but at the end of my drawing, something is not right. Also I need help to make sure my weaving doesn't intersect each other.

Thank you.

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Attachments:

• handcraft-bamboo-weave-pattern-texture-thai-32500744.jpg, 182 KB
• weaving-141108.gh, 36 KB
• problem2.pdf, 258 KB