Chain structure.

Hey,

Chain structure can be made by joining two eyes of a chain with a third one.

Eye is the same pattern played twice in distance of 3 places, so there is two places of gap between:

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1..1

How to join patterns:

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1..1 - first eye of patterns
2..2 - 2nd eye
3..3 - 3rd eye


eyes 1 and 3 linked by 2:
1..13..3
  2..2

It may go really complex further:

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1..13..35..57..7
  2..24..46..6

In a straight line it looks like this:

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1.213243546576.7

And you can loop the structure in a circle with another eye:

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1821324354657687

I wish you happy eyeing!