AA ->
AB ->
AE ->
AH ->
AI ->
AL ->
AM ->
AN ->
AR ->
AS ->
AT ->
AW ->
AY ->
BA ->
BO ->
CH ->
DA ->
DE ->
EA ->
ED ->
EF ->
EH ->
EM ->
EN ->
ES ->
ET ->
EX ->
GO ->
HA ->
HE ->
HO ->
ID ->
IF ->
IN ->
IO ->
IS ->
IT ->
MA ->
NA ->
NE ->
NY ->
OB ->
OD ->
OE ->
OF ->
OH ->
OI ->
OM ->
ON ->
OO ->
OP ->
OR ->
OS ->
OU ->
OW ->
OX ->
OY ->
RE ->
SH ->
SO ->
ST ->
TA ->
TE ->
UG ->
UH ->
UM ->
UP ->
UR ->
YE ->
YU ->
ZO ->