I have made several of these. It will not matter which you use because even though you start with strip sets that have eight (or nine) same width strips your subcuts do not fall the same place in the midst of a strip with every cut. When you sew them back together, the seams do not match. That is part of the charm as they look like half steps of quarter steps. The finished product will have a slightly different dimension, but makes no visual difference. Have fun!