AB
BB
CB
DB
EB
FB
GB
HB
IB
JB
KB
LB
MB
NB
OB
PB
QB
RB
AC
BC
CC
DC
EC
FC
GC
HC
IC
JC
KC
LC
MC
NC
OC
PC
QC
RC
AD
BD
CD
DD
ED
FD
GD
HD
ID
JD
KD
LD
MD
ND
OD
PD
QD
RD
AE
BE
CE
DE
EE
FE
GE
HE
IE
JE
KE
LE
ME
NE
OE
PE
QE
RE
AF
BF
CF
DF
EF
FF
GF
HF
IF
JF
KF
LF
MF
NF
OF
PF
QF
RF
AG
BG
CG
DG
EG
FG
GG
HG
IG
JG
KG
LG
MG
NG
OG
PG
QG
RG
AH
BH
CH
DH
EH
FH
GH
HH
IH
JH
KH
LH
MH
NH
OH
PH
QH
RH
AI
BI
CI
DI
EI
FI
GI
HI
II
JI
KI
LI
MI
NI
OI
PI
QI
RI
AJ
BJ
CJ
DJ
EJ
FJ
GJ
HJ
IJ
JJ
KJ
LJ
MJ
NJ
OJ
PJ
QJ
RJ
AK
BK
CK
DK
EK
FK
GK
HK
IK
JK
KK
LK
MK
NK
OK
PK
QK
RK
AL
BL
CL
DL
EL
FL
GL
HL
IL
JL
KL
LL
ML
NL
OL
PL
QL
RL
AM
BM
CM
DM
EM
FM
GM
HM
IM
JM
KM
LM
MM
NM
OM
PM
QM
RM
AN
BN
CN
DN
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FN
GN
HN
IN
JN
KN
LN
MN
NN
ON
PN
QN
RN
AO
BO
CO
DO
EO
FO
GO
HO
IO
JO
KO
LO
MO
NO
OO
PO
QO
RO
AP
BP
CP
DP
EP
FP
GP
HP
IP
JP
KP
LP
MP
NP
OP
PP
QP
RP
AQ
BQ
CQ
DQ
EQ
FQ
GQ
HQ
IQ
JQ
KQ
LQ
MQ
NQ
OQ
PQ
QQ
RQ