COLL (CLL+OLL) 21
COLL_21_a = CLL 38
Fw - R U R'U' - R U R'U' - R U R'U' - F'w
F F
B B
BULU'L'ULU'L'ULU'L'B'
LUL'UB'UBU'B2RBR'B
L'U'LU'FU'F'UF2R'F'RF'
RB2R2U2RB2R'U2R2B2R'
COLL_21_b = CLL 39
R U'
U'
R'
U'
- R U R'
U'
R U'R'
F B
F B
(U)RUR'URU'R'URU2R'
R U2 R'U'R'U'R U'R'
COLL_21_c = CLL 36
R'w R U'
U'
R'U2 (f r) U R2 U R2 U' R'2 Fw
180
Rw R' U'
U'
L' U'U' (f r') U R2 U R2 U' R'2 Fw
L F
R F
R'LF2L'F2UF2UF2U'F2R
RL'B2 R B2 U B2 U B2 U B2 L
RB'R'BU2R2F'LF'L'F2R2
R'U2L'RDL2UL2D'B2L
RU2R'LD'L2U'L2DF2L'
LU2L'RD'R2U'R2DB2R'
(f) U R2
U'
D (f') D' R2
U'
L'w2 U (r'f') R2
U'
(r')
R'U'U'R L'Uw (u) R2 U W2 U'w R2 Fw
COLL_21_d = CLL 35
U'R U R'U - R U L' - U R'U'L
L R
F F
FUF'UFUB'UF'U'B
F'U'FU'F'U'BU'FUB'
L'URU'L2UL'R'U2LUL'
