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

y x2 // inspection
D2' L2' R' U R' F D // cross
U' R' U2 R L' U L // 1st pair
R U' R' U' R U R' U R U' R2' U R // 2nd pair
y' U2 R' U' R // 3rd pair
y' R U R' U2 R U' R' // 4th pair / OLS
U' F R U' R' U' R U R' F' R U R' U' R' F R F' U // PLL