z y2
//
inspection
U R F R L2'
//
partial cross / 1st pair
(U' D) R' U R u'
//
2nd pair
r U' r'
//
Xcross
r U' r' U2' r U r'
//
3rd pair
y R' U2 R U' R' U R
//
4th pair
U L' l U R' F2 R U L' U (L r) R'
//
OLL
U' U r' D' F r U' r' F' D r2 U r' U' r' F r F'
//
PLL