It's a mirror image of the other side.
You can't do that pattern on one continuous foundation it has to be at least two foundations..
#9 is a whole piece (unless you want to split it for aesthetic reasons).
You can attach #9 it to one side if you want as part of the foundation ....or use it as the center and attach the pieced foundations (1-8 and 10-17) to both sides of #9.