|Doris solution with diamond centers|
Depending on how you join the Doris tiles to match them by color, they can fit single edge to single edge, double to double, single to double (hybrid), or even corners. Here is an attractive solution with all doubles joining, leaving all the centers turned into diamonds.
Below are some of the figures mixing diamonds and squares, a small sampling of the variations in the Doris book. Notice the neat symmetries. They all have many solutions.
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