Short Cycle

From a line: centers U-Turn Back toward the nearest end and then Couples Hinge.

\sdform{\boy1n,\girl1s,\girl2n,\boy2s\cr} \sdform{\boy1e\cr\girl1e\cr\girl2w\cr\boy2w\cr}
1 1 2 2 1 1 2 2
before Short Cycle after


This call has a little bit of the "feel" of Recycle at Mainstream.