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