F2 R2 B U2 B2 U' F' R' D2 U' L D' F L' F R' D2 L

y2 x // inspection
R U' x' z2 (U' D) z' U' R' z // partial cross
R U' R2 U R U R x' U' R' (x y) // Xcross
U' y R U R' // 2nd pair
(x y) R z' R' U' R // 3rd pair
U' U' R U' R' U' U' R U' R' // 4th pair
U' R U' U' R2 U' R2 U' R2 U' U' R // OLL
R' U' R U' R U R U' R' U R U R2 U' R' U // PLL