z'
//
inspection
R' U L2
//
cross
y U' R' U' R
//
1st pair
y2' R' U2' R U R' U' R
//
2nd pair
U y' U R' U R U' R' U' R
//
3rd pair
U y' R U2' R' U R U' R'
//
4th pair
U' U2 r U r' R U R' U' r U' r'
//
OLL
U' R2 U R' U R' U' R U' R2 D U' R' U R D' U'
//
PLL