Scamper

Typically from a 3/4 tag: the ends Divide and Touch 1/4, while the centers Hinge and Box Circulate. If the Centers are facing couples, they Touch 1/4 and Box Circulate.

\syhDBDs{b1w,b4e,g1w,g4e} \sxvlines{b1s,g1s,b4s,g2s}
1 3 4 2 1 3 4 2 1 3 1 3 4 2 2 4
before Scamper after