famille modulaire the 3 par 3 (3 by 3)   A character designed on a grid of three squares by three = 9 squares. This is not many. I have attempted the same on a grid of 1 square by 1. The result had great rigour, but was a little monotonous. With the 3/3 cactus and 3/3 thistle, Euclid swallows thorns.