x2 y
//
inspection
R' D L F' L2' U' D
//
cross
U L U' L' R' U R
//
1st pair
y2' U2 R U' R' L U' L'
//
2nd pair
(R' U' R U)2 R' U' R
//
3rd pair
R U R' U2' R U R'
//
4th pair
U' R U R' U R U2 R'
//
OLL
U R' U' F' R U R' U' R' F R2 U' R' U' R U R' U R U2'
//
PLL