This is an L-triomino, or shape created from three squares laid edge-to-edge:

When you divide each square like this…

You can create a fractal like this…

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Here are more fractals created from the triomino:

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And here is a different shape created from three squares:

And some fractals created from it:

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And a third shape created from three squares:

And some fractals created from it:

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Previously pre-posted (please peruse):

• Tri-Way to L
• Square Routes
• Square Routes Revisited
• Square Routes Re-Revisited