I understand what you mean.... The 'inbetween' blocks are what you want instructions for. If you look at it you will see it starts with a 9 patch block then you add 'sashing' around it. I have to get to work right now, but I'll try and do the figures for you tonight or tomorrow for a 12 inch finished block if nobody else has posted for you.
Usually these blocks in the Patchwork quilts are 12 inch finished.