y x'
//
inspection
U' R U' x' D R' D R2
//
Xcross
y2 U' U' (y z) U' R' U R' z' y L U L'
//
2nd pair
y' R U R' U (y z) U' R' U
//
3rd pair
z' y' R' U R U' R' U' R
//
4th pair
R' U R U' U' L' R' U R U' L
//
COLL
R' U' R U' R U R U' R' U R U R R U' R'
//
EPLL