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