This pattern was drawn in one of Geneviève Crabe's Tangle Organizers Layout #1.
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This is one of those patterns that seems so simple once you think of it, so possibly someone else has already. I don't remember seeing one, but my memory makes swiss cheese look whole, lol! If you know of a pattern that uses the same steps, please let me know so I can give credit.
It's a very flexible pattern, easily varied, and can be a border, string or fill.