Actually when I pulled up the 2763 Pinterest picture, it looks like it is all 5" squares or at least the same size squares over the entire quilt. It is just put together to make the design. They just cut the 'like' 'large squares' into 4 pieces to make them the same size of all the other squares and then put the cut squares aside to grab and match the edges when they put the single squares back together again when they needed to to make the design. If you look closely, you can see the lines of the indivisable squares.