Criss Cross the Shadow

From parallel waves or lines, with ends in tandem: Ends 1/2 Zoom but meet with their original inside hands, Cast 3/4 and Spread; centers facing in Cross Extend, Hinge with each other, and Extend; centers facing out Cloverleaf but Cross to the other center. Centers remain centers etc.

If all the centers are trailers, they Pass Out in place of the Cross-Extend-Hinge-Extend.