1–8
: 1s cross down, cast up round 2s, cross R and set.
9–16
: 2s cross up, cast off, cross R and 1s&2s set.
17–20
: 1s followed by 2s lead down the middle.
21–24
: 2s followed by 1s lead up again.
25–32
: 2s and 1s R&L.