Parallelograms (rotated, sparse)

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The way pleats exit the Parallelograms molecule allows the molecules to be connected in more than one way. In the standard Parallelograms layout, individual molecules are connected into parallel rows. In the layout shown here, they form a network of two sets of rows rotated 90° relative to each other. I added a bit more space to make the model easier to collapse cleanly, but a denser layout is also possible. Actually, both models with rotated layout were easier to collapse cleanly than the one with default layout.