y x2 // inspection
R2' D F' R r U' x' R' F2 D' // cross
U L' U L R' U R // 1st pair
y' R U' R' U' d' R U R' U y' R' U' R // 2nd pair / EO
U2' L' U L // 3rd pair
U' R U R' U2' R U R' U' R U R' // 4th pair
U F' r U R' U' r' F R // OLL
U' R U R' U R U R' F' R U R' U' R' F R2 U' R' U2 R U' R' U // PLL