The first tile 1a, and its mirror image 1b.
The second tile 2a, and its mirror image 2b.
The third tile 3a, and its 90° rotation images 3b, 3c,
3d.
The tile 4a, and its 90° rotation images 4b, 4c, 4d.
The tile 5a, and its 90° rotation images 5b, 5c, 5d.
These are symbolized in the 16 entries in the small red-black
square,
where you can get every tile by clicking
on its symbol.
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