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