Tessellation of the letter E (with the aligned repeat going head-to-foot) in symmetry group p2. Only a special E (with arm length 1½(7 - √33)) fits in a rectangular cell. Currently displaying a white outlined version in 3 colours (the minimum map colouring) of red, yellow and blue. This triples and re-orients the cell and destroys the symmetry. Other colours, sizes and orientations are available on request and you can even ask for a combination of several designs together.