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