Version #1
From a double pass thru or completed double pass thru formation: Lead couples slide to the right and trailing couples step forward, drifting left to form a line of four with the lead couples. Finishes in parallel lines facing in or out. (author unknown)
Version #2
From eight chain thru formation: Outside couples slide to the left and inside couples walk forward to make a two faced line. Finishes in parallel two faced lines offset sideways. (author unknown)