U' R2 B2 D B2 D2 B L U' L' B' R2 F U L2 R2 U'

x y2 // inspection
u r U2 D2' x' // cross
R' U' R U' R' U R // 1st pair
U' R U' R' // 2nd pair
y2' U3 R' U R U' R' U' R // 3rd pair
U2 R U R' U2' R U R' U' R U R' // 4th pair
U' f' L' U' L U f // OLL
U R' U R' U' y R' F' R2 U' R' U R' F R F U2' // PLL