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$\begingroup$ A single set certainly cannot fill a rectangle, because the 'height' of a T in each corner must be 2 (otherwise you can't fill the angle next to the edge), and there are are only two such tiles in a set. $\endgroup$Weather Vane– Weather Vane2025-02-20 12:18:32 +00:00Commented Feb 20, 2025 at 12:18
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