1-4M-4M-1
Mirror, then rotate alternate cells 270 degrees counterclockwise.
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1-3M-3M-1
Mirror, then rotate alternate cells 180 degrees.
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1-2M-2M-1
Mirror, then rotate alternate cells 90 degrees counterclockwise.
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1-1M-1M-1
Mirror alternate cells.
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1-4-4-1
Rotate alternate cells 270 degrees clockwise. See “1-2-2-1” for a rotated view.
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1-3-3-1
Rotate alternate cells 180 degrees.
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1-2-2-1
Rotate alternate cells 90 degrees clockwise.
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1-1-1-1
This is the first pattern in the Library. All other patterns derive from this one. This is the only single-shape tessellation in the Library. One shape — the bird — fits against itself to fill the plane perfectly.
