Post #2672403

And then show that for each of those four examples for an nxn square transformation, you can do a similar n+4xn+4 transformation with the exact same frame plus a couple more 2x4 rectangles popped on at the edges of the frame. So this is a family of four frame transformations for n, n+1, n+2, and n+3, and each of them also trivially works to add for any multiple of 4 larger value of n. Neat!