I'm not exactly sure. On the pattern instructions though it says in CAPITILIZED letters that you can build the 'Big Quilt' in sets of 6 blocks.
The info I found on the web is that the pattern was designed by Debbie Bowles, and you are supposed to be able to get the pattern from 'Maple Island Quilts'.
I tried to get the pattern from them but the email would not go through, but I found it at a quilt shop I was at yesterday.
Hope that helps a bit.