x2 y // inspection
D' r U x' D' R D' // cross
U' R U R' U' z U R' U' // 1st pair
U' R U x' U R U' // 2nd pair
z' U' R U' R' U R' U' R // 3rd pair
U R U' R' U R U' R' // 4th pair
U' U' R U R' y' r' U r U' r' U' r // OLL
U z' y' R U' R z' R2 U' z U R z' R2 U' U' F