Pass the Top

From facing lines: Centers Spin the Top, Explode, and spread apart. The ends Pass Thru, Bend the Line, Pass In, and step forward into the space that has just been vacated.

\syhlines{g3s,b3s,g2s,b2s} \systees{b4e,g1w,b3e,g4w} \sxvlines{b4s,b3s,g2n,g3n} \syhlines{g4s,g1s,b4s,b3s}
3 1 3 1 2 4 2 4 4 2 1 3 3 1 4 2 4 2 3 1 2 4 3 1 4 2 1 3 4 2 3 1
before Pass the Top Spin the Top Pass Thru and Bend Explode, Pass In finished