Fan
The "coaching" book i received came with of course, with the CC as one of the first spreads to learn how to use. I've seen a few where there are naturally 11 cards.
I stick to ten; however, the sample shows four cards being laid out, aside from the spread.
They don't continue the spread, but provide more information of what the spread as already reveilled to you.
If I am not mistaken, it is past, present and future energies...
Hope that helps!