A1    1-4    W1 cast down around both 2s up to partner's place, M1 follows up middle to her place
A2    1-4    M2 cast up around both 1s, W2 follows
B1    1-2    1s cross go below, 2s two hand turn half, lead up
    3-4    Partner two hand turn
B2    1-4    Four changes of rights and lefts

https://www.youtube.com/watch?v=Lte3LiXo_Wg