x y2 // inspection
D L R F D // cross
y' U F R' U' R F' // 1st pair
y' U y' U R U' R' U2 R U' R' // 2nd pair
y' U L' U L L U' L' // 3rd pair
U2' r' F r U r' F' r // 4th pair
U' R U R' U' R' F R2 U R' U' F' // OLL
R' d' F R2 u R' U R2 U' U R' U' R U' R2' R2 u' R2' R2 U (l' R'