z2
//
inspection
R' D R2 F2
//
cross
y' R U R' U3' R' U R
//
1st pair
y' R' U2 R U' y R U R'
//
2nd pair
y2 U' R U' R' r' U' R U M'
//
3rd pair
U y' R' U2 R U R' U' R
//
4th pair
U R U2 R2 U' R2 U' R2 U2 R
//
COLL
U' R U' R U R U R U' R' U' R2
//
EPLL