V
R' U R' U' y R' F' R2 U' R' U R' F R F
- [R' U R' U'] [x2 y'] [R' U R' U'] [l R U'] [R' U R] U
- R' U R' d' R' F' R2 U' R' U R' F R F
Y
F R U' R' U' R U R' F' R U R' U' R' F R F'
Na
R U R' U R U R' F' R U R' U' R' F R2 U' R' U2 R U' R'
Nb
R' U R U' R' F' U' F R U R' F R' F' R U' R