With regards to .in and co.in, the common three letter words are highly sought after. Most of them were registered during the landrush on 16th Feb 2005. Here are the English words compiled from the scrabble strategy sites:
ACE
ACT
ADD
ADO
ADS
AGE
AGO
AID
AIM
AIR
ALE
ALL
AND
ANT
ANY
APE
APT
ARC
ARE
ARK
ARM
ART
ASH
ASK
ASS
ATE
AWE
AXE
AYE
BAD
BAG
BAN
BAR
BAT
BAY
BED
BEE
BEG
BET
BIB
BID
BIG
BIN
BIT
BOA
BOB
BOG
BOO
BOP
BOW
BOX
BOY
BRA
BUD
BUG
BUM
BUN
BUS
BUT
BUY
BYE
CAB
CAD
CAM
CAN
CAP
CAR
CAT
CAW
COB
COD
COG
CON
COO
COP
COT
COW
COY
CRY
CUB
CUE
CUP
CUT
DAB
DAD
DAM
DAY
DEN
DEW
DID
DIE
DIG
DIM
DIN
DIP
DOE
DOG
DON
DOS
DOT
DRY
DUB
DUD
DUE
DUG
DUO
DYE
EAR
EAT
EBB
EEL
EGG
EGO
EKE
ELF
ELK
ELM
END
EON
ERA
ERR
EVE
EWE
EYE
FAD
FAN
FAR
FAT
FED
FEE
FEW
FIB
FIG
FIN
FIR
FIT
FIX
FLU
FLY
FOE
FOG
FOR
FOX
FRY
FUN
FUR
FYI
GAB
GAG
GAL
GAP
GAS
GAY
GEE
GEL
GEM
GET
GIG
GIN
GIT
GNU
GOB
GOD
GOO
GOT
GUM
GUN
GUT
GUY
GYM
HAD
HAG
HAM
HAS
HAT
HAY
HEM
HEN
HER
HES
HEW
HEY
HID
HIM
HIP
HIS
HIT
HOE
HOG
HOP
HOT
HOW
HUB
HUE
HUG
HUH
HUM
HUT
ICE
ICY
ILK
ILL
IMP
INK
INN
ION
IRE
IRK
ITS
IVY
JAB
JAM
JAR
JAW
JAY
JET
JIG
JOB
JOG
JOT
JOY
JUG
JUT
KEG
KEN
KEY
KID
KIN
KIT
LAB
LAD
LAG
LAP
LAW
LAX
LAY
LED
LEE
LEG
LET
LID
LIE
LIP
LIT
LOB
LOG
LOL
LOP
LOT
LOW
LUG
MAD
MAP
MAR
MAT
MAY
MEN
MET
MEW
MIX
MOB
MOD
MOM
MOO
MOP
MOW
MUD
MUG
MUM
NAB
NAG
NAP
NAY
NET
NEW
NIL
NIP
NIT
NOD
NON
NOR
NOT
NOW
NUN
NUT
OAF
OAK
OAR
ODD
ODE
OFF
OIL
OLD
OMG
ONE
OPT
ORE
OUR
OUT
OVA
OWE
OWL
OWN
PAD
PAL
PAN
PAR
PAT
PAW
PAY
PEA
PEG
PEN
PEP
PER
PET
PEW
PIE
PIG
PIN
PIT
PLY
POD
POP
POT
PRO
PRY
PUB
PUN
PUP
PUS
PUT
QUA
RAG
RAM
RAN
RAP
RAT
RAW
RAY
RED
RIB
RID
RIG
RIM
RIP
ROB
ROD
ROE
ROT
ROW
RUB
RUE
RUG
RUM
RUN
RUT
RYE
SAC
SAD
SAG
SAP
SAT
SAW
SAY
SEA
SEE
SET
SEW
SEX
SHE
SHY
SIC
SIN
SIP
SIR
SIT
SIX
SKI
SKY
SLY
SOB
SON
SOP
SOW
SPA
SPY
SUB
SUE
SUM
SUN
TAB
TAG
TAN
TAP
TAR
TAX
TEA
TEE
TEN
THE
THY
TIE
TIN
TIP
TIT
TOE
TON
TOO
TOP
TOT
TOW
TOY
TRY
TUB
TUG
TWO
URN
USE
VAN
VAT
VET
VEX
VIA
VIE
VOW
WAD
WAG
WAN
WAR
WAS
WAX
WAY
WEB
WED
WEE
WET
WHO
WHY
WIG
WIN
WIT
WOE
WOK
WON
WOO
WOW
WRY
YAK
YAM
YAP
YEN
YES
YET
YOU
ZIP
ZOO