y x2 // inspection
U R U' B' U' R' F R // cross
U' L' U L U' L' U' L // 1st pair
y U R' U' R U2' R' U R // 2nd pair
U2 y' R' U // 3rd pair
R2 U2' R' U2 R U' R' // 4th pair
U' R U R' U R U2' R' F R U R' U' F' // OLL
U R U R' U' R' F R2 U' R' U' R R' R U R' F'