Coordinates range from 0 to 1, with decimal points. It took me an hour to figure this out. After a few tries with the group pl, you should be able to figure out which coordinates are a best approximation. Use the groups you chose in part 2a, G. H and J. to tesselate the plane with your fundamental region. Use Kali's print function to print out the resulting pictures.
Some people have trouble with the print function.
Your friendly nerd can help with this too. As far as we can tell, computers smell fear just like dogs. But trust us, you are surrounded by them. See sample a. These are the basis for border designs and you will choose one of them as a basis for a border print for one of your block designs.