From general lines, with the ends forming a tandem: In each
line, the end facing out Circulates.
Meanwhile, each of the other dancers, in a single, smooth
motion, faces the vacated spot, takes a step
forward, and turns another 1/4 in the same direction he
first turned. Ends back in parallel waves or lines.
The non-circulators' part is a single motion, rather than a
3-part move. This call can be fractionalized into halves.