y x2
//
inspection
(R' z') R z' R (x y) U z D'
//
cross
z R U R' U' z' R U' R'
//
1st pair
y U' U' R U' R'
//
2nd pair
U' R' U' R U' U' R' U R
//
3rd pair
z R U R U' R2 U R' U' z'
//
4th pair
U r U R' U R U' U' r'
//
OLL
U x' R U' R z' R2 U' z U R z' R2 U' U'
//
PLL