x y2 // inspection
D R' L B' R U R' u' U R' U' R2 U R' U D' // xcross
U L U' L' // 2nd pair
y' D' U R U R' U R U' R' D // 3rd pair
d R' U' R U' R' U R // 4th pair
U r R2' U' R U' R' U U R U' r' R // OLL
U R' U' F' R U R' U' R' F R2 U' R' U' R U R' U R U' // PLL