Pythagorean table with two guides to multiply from 1x1 to 10x12, if you have a machine with two filaments you can do the last layers in another color, if you have to do a lot on a single filament machine I recommend doing it in a light color and painting the letters with an indelible black fibron, no supports necessary. The guides are forcibly fitted, the shortest one first. I recommend making the guides in a different color to achieve contrast.

added a 12 x 12 board, use the two long guide.