x z
//
inspection
r R2' F R U r' U r
//
cross
U2' R U' B r' U' M'
//
1st pair
U R' F R F' R' U' R
//
2nd pair
y' U R' U R U' R U R'
//
3rd pair
U2' R' U' R
//
4th pair
l' U' l L' U' L U l' U l
//
OLL
U R' U' F' R U R' U' R' F R2 U' R' U' R U R' U U' R R' U R U2'
//
PLL