1-2 1C cast off one place
3-4 1C turn halfway by RH, stay facing out
5-6 1C cast off one place.
7-8 1C turn halfway by RH, end in the middle of the dance facing up
9-10 1C lead up to end between their original 2C
11-12 1C cast off one place
13-14 1C lead down to end between their next 2C
15-16 1C cast up around their next 2C
17-20 1W turn her original 2M (diagonally above her) RH
21-24 1M turn his original 2W (diagonally above him) RH