Rotations of order 2 (but not four)

The remaining patterns are numbered 515, which implies that one more further question needs to the answered.


The first group are examples of patterns with containing a reflection. An example of two of these are:
The number in this group is 464, which is 90% of the total. For all this patterns, see page.
The second group are examples of patterns with no reflection. An example of two of these are:
The number in this group is 51, which is 9% of the total. For all this patterns, see page.

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