O
H
U
Pi
T
L
S
AsO

(R U R' F')
(R U R' U')
(R' F R2 U' R')

F (R U' R' U')
(R U R') F'
(R U R' U')
(R' F R F')
H

(R U'2 R' U')
(R U R' U')
(R U' R')

(F)
(R U R' U')*3
(F')

[U]
(R U'2 R')
(R' F R F')
(U2)
(R' F R F')

(r U' r'2 D')
(r U' r' D)
(r2 U r')



































