The valid two-letter words always cause arguments. According to the makers of
the Scrabble® game, there are a 109 2-letter words that are acceptable in the
British English version of their game. Interestingly, though there are only 96
in the North American version, it is not a sub-set: there are 12 extra words
not in the British English version (AB AG AL DE ED ET HM MM OP PE UH YA).

Although enthusiasts insist on the validity of all of these words, not many
people who play for fun enjoy using them in their games. The 'Adult' lexicon
supplied with !X-Word is meant for fun/friendly play so not all of the 109
British English words are there. The decision to leave out a word was largely
arbitrary -- it's not like I'm going to please everyone! The 'Adult109' lexicon
does contain all 109.

I have 3 half-megabyte lexcions: ChampOSPD2 and ChampTWL98 which both contain
the standard North-American set of 96, and ChampENABL which contains all 121
(combining the English and North-American words).

Here is the full list of 109 words. I have marked words that are not in the 'Adult'
lexicon with an asterisk (*). The only significance of the lowercase words is that
they are deemed 'commonplace'.


AA    rough, cindery lava
AD    advertisement
AE    one
AH    expresses delight
AI    three-toed sloth
am    form of 'to be'
an    indefinite article
as    to the same degree
at    in the position of
AR*   the letter 'R'
AW    expresses protest
AX    cutting tool
AY    affirmative vote
BA    (Egyptian) eternal soul
be    to have actuality
BI    a bisexual
BO    a pal
by    a side issue
CH*
DA
DI
do    the verb
EA
EE
EF    the letter 'F'
EH    expresses doubt
EL    elevated railroad
EM    the letter 'M'
EN    the letter 'N'
ER    expresses hesitation
ES    the letter 'S'
EX    the letter 'X'
FA    a tone of the scale
FY
GI
go    to move along
GU*
HA    sound of surprise
he    male person
hi    used as a greeting
HO    expresses surprise
ID    part of the psyche
if    a possibility
in    the preposition
IO
is    form of 'to be'
it    neuter pronoun
JO    sweetheart
KA*   (Egyptian) spiritual self
KO
KY
LA    tone of the scale
LI    Chinese unit of distance
LO    expresses surprise
MA    mother
me    personal pronoun
MI    tone of the scale
MO    a moment
MU    a Greek letter
my    possessive pronoun
NA    no; not
NE    born with the name of
no    a negative reply
NU    a Greek letter
NY*
OB*
OD*   a hypothetical force
OE    Faeroe Islands whirlwind
of    coming from
OH    to exclaim in surprise
OI
OM    a mantra
on    the preposition
OO*
or    alternative
OS*   a bone
OU
OW    expresses pain
ox 
OY    expresses dismay
PA    father
PH
PI    a Greek letter
PO
QI
RE    a tone of the scale
SH*   urges silence
SI    ti (a tone of the scale)
so    sol (a tone of the scale)
ST
TA    expresses gratitude
TE
TI    a tone of the scale
to    in the direction of
UG
UM    indicates hesitation
UN    one
up    to raise
UR
us    personal pronoun
UT
we    pronoun
WO    woe
XI    a Greek letter
XU*   Vietnamese currency (apparently)
ye
YO    used to call attention
YU
ZO