x2 y' // inspection
D2' U r U R' x' u // cross
R U' R' U y L U L' // 1st pair
U2 L' U' L U' L' U L // 2nd pair
U' R U' R' U R' U' R // 3rd pair
U' R U' R' U2 R U' R' // 4th pair
U F R U R' U' R U R' U' F' // OLL
U' R U R' F' R U R' U' R' F R2 U' R' U2