x2 y' // inspection
F R2 y' r U' r' // cross
U U L' U L2 U' L' // 1st pair
U' y' R' U R // 2nd pair
U' R U' R' U' y' R' U' R U' R' U R // 3rd pair
U2 L' U L U2 y' R U2 R' U' R' F R F' // 4th pair
U' U' U' r' R U R U R' U' R' F R F' M' // OLL
U U' U' U' R U R' U R U R' F' R U R' U' R' F R2 U' R' U2 R U' R'