centres
U r2 U r2' r' r U r' green 2x3
R' u' 3u U' 3r' green
(x' y') F' r U2 r' blue line
F R u' U y' r' U' U' r blue 2x3
x U' r' U r U' r' U r blue

(x' z') U' U' r U' white 2x2
x U' r U' r' U' 3l U' white 2x3
x U D D r2 U r white
U' r2 U (r' 3l') orange 2x2
r' F' x' r U U r U' 3l' orange 2x3
U U 3l' U r' U' U' r2 orange
U' U' r' U U 3l F' r U' r' yellow / red

edges
U' U' R d2 WO
L' U L u' u' R U R' 3u WB
U R U' R' x2' u2 F R' F' R u' d YO
y' R' U R U u U' R' U' R (U' d') YR
U' R U' R' d WR
R U' R' (z x') (x z) U' y U' R U' R' 3u' R U R' F R' F' R U' (d U') YB
R U' R' u R U R' F R' F' R u' YG
U' R U' R' (z x') z (u' d) RB / fix centres
U R U' R' R2 u' y u' R U R' F R' F' R pseudo GO
y' R U R' F R' F' R u' u' preserve partial OB / finish GO
y' R2' R' U R d OB
F R' F' R u' R U R' F R' F' R u 3u' WG / GR

3x3x3
y' U U 4l' x U R' F R U y R2 white cross
L U L' wRB
U U' R U' R' U' L' U' L wGR
U y' U R' U' U' R U R' U' R wGO
4d' U' R' U' R wOB
4r' R2 U R' U R U' U' R' U 4l' L OLL
U' U' R U R' U' R' F R2 U' R' U' R U R' F' U' U' PLL