I looked for a while and couldn't find the pattern. I drew it in EQ as an 8 inch block. With a 2 inch background border around the center blocks, then a 2 inch green border, then 8 inch blocks in the second section, then an 8 inch outside border, it finishes at 64 inches square. You could do it as 4 inch blocks. I have included EQ's version of the Rotary cutting for the 3 blocks as 8 inch blocks.