How do you pass stage 11 on Block N Roll at kongregate

To complete Bloc 'n' Roll (aka Bloxorz)

U = Up, D = Down, L = Left, R = Right, S = Space

Rx4, U, L, Dx3, Rx4, Ux2, L, Ux2, Lx3, D, R, U, Rx2, D, R, U, Lx3, Dx2, Lx3, Ux2, R, Ux2, L, D, R, U, R, D, L