In this system, as in the constant order system, we understand that the numbers on the leaves will be taken down starting at the ``upper'' side of one pat, passing through to the ``lower'' side of that pat, and then from ``lower'' side to ``upper'' side through the other pat. It will always be the ``lower'' side of the flexagon that will be closed together in flexing. We can describe the operations rotation (R), turning over (T), and flexing (F) as follows:
The letter ``I'' indicates the initial position.