What is the cheat for level 18 on B-Cubed

The moves are paired for the first 4 : R2, U2 to the orange squares.
Next is
R, U2, L4, D3, R2, U, L, U, R2 (done)
R, D2, R, U4, L, D, L4, D2, R2, U, L (done)


The code for level 19 is 839654.