z' inspection

centers
D' 3r2 U' 3r2' F r' F x' r x' F' D r' red
y' R d' r' r2 U2' r' x' y' x' U' y x u2 U' r' F2 r orange

z x' D r U x' D' U 3r2 U 3r2' 3l blue
x' x U' r' F F r B r2' F r2 x' U r U x r2' F2 r white
U2' r' U x' F r F' r' F r U' r U r' U' r U r' U' r U' U' r' yellow+green

edges
U' R' u WB
U' L' U L 3u' U R U' R' U F U' F' 3u' GO
U2 F R' F' R u' 3u YG
R U' R' 3u' R U R' F R' F' R d WR
R U' R' u z2 u2 YB
U' F R' F' R u' u' 3u' YO
u u' U U R U' R' L' U L u BR
U L' U L u' GR
L' U' L z x' r x' 3r r' U2' 3r' r x' U U 3r U' R' U R' x R R' U R U' 3r' BO
U2 3r2 U' R' U R' x U R U' 3r' l' WO
U2 l2 U' R' U R' x U R U' 3r' l' WG+YR

3x3x3
z' y' y' F' D2 R' D F U' D' cross
R U R' U' L U L' 1st pair
U' L' U L U' y U' r r' R U R' 2nd pair
U L' U U L U' L' U L 3rd pair
U2 L U2 L' U' L U2 L' 4th pair
U R U R' U' R' F R F' OLL(CP)
U2' AUF