Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'buy cars', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
buy cars
Transposition0
uby cars
byu cars
bu ycars
buyc ars
buy acrs
buy cras
buy casr
Transposition1
yub cars
b yucars
buc yars
buyac rs
buy racs
buy csra
Transposition2
uybcars
bcy uars
bua cyrs
buyrca s
buy sarc
Transposition2r
yubcars
bc yuars
buac yrs
buyrac s
buy srac
Transposition0x2
ub ycars
ubyc ars
uby acrs
uby cras
uby casr
byuc ars
byu acrs
byu cras
byu casr
bu yacrs
bu ycras
bu ycasr
buyc ras
buyc asr
buy acsr
Slip3A
uyb cars
by ucars
bu cyars
buyca rs
buy arcs
buy crsa
Slip3B
ybu cars
b uycars
bucy ars
buya crs
buy rcas
buy csar
Omission
uy cars
by cars
bu cars
buycars
buy ars
buy crs
buy cas
buy car
Repetition
bbuy cars
buuy cars
buyy cars
buy cars
buy ccars
buy caars
buy carrs
buy carss
QWERTY Substitution
vuy cars
nuy cars
byy cars
biy cars
but cars
buu cars
buy xars
buy vars
buy csrs
buy caes
buy cats
buy cara
buy card
QWERTY Repetition after
bvuy cars
bnuy cars
buyy cars
buiy cars
buyt cars
buyu cars
buy cxars
buy cvars
buy casrs
buy cares
buy carts
buy carsa
buy carsd
QWERTY Repetition before
vbuy cars
nbuy cars
byuy cars
biuy cars
buty cars
buuy cars
buy xcars
buy vcars
buy csars
buy caers
buy catrs
buy caras
buy cards
QWERTY Substitution Transposed
uvy cars
vyu cars
vu ycars
vuyc ars
vuy acrs
vuy cras
vuy casr
uny cars
nyu cars
nu ycars
nuyc ars
nuy acrs
nuy cras
nuy casr
yby cars
by ycars
byyc ars
byy acrs
byy cras
byy casr
iby cars
byi cars
bi ycars
biyc ars
biy acrs
biy cras
biy casr
ubt cars
btu cars
bu tcars
butc ars
but acrs
but cras
but casr
ubu cars
bu ucars
buuc ars
buu acrs
buu cras
buu casr
uby xars
byu xars
bu yxars
buyx ars
buy axrs
buy xras
buy xasr
uby vars
byu vars
bu yvars
buyv ars
buy avrs
buy vras
buy vasr
uby csrs
byu csrs
bu ycsrs
buyc srs
buy scrs
buy crss
buy cssr
uby caes
byu caes
bu ycaes
buyc aes
buy aces
buy ceas
buy case
uby cats
byu cats
bu ycats
buyc ats
buy acts
buy ctas
buy cast
uby cara
byu cara
bu ycara
buyc ara
buy acra
buy craa
buy caar
uby card
byu card
bu ycard
buyc ard
buy acrd
buy crad
buy cadr
WrongDoubles
$JSON
$address
$applyDefault
$clone
$commas
$copy
$copyFields
$delete
$entries
$expand
$filt
$getType
$isArray
$isBoolean
$isClass
$isDate
$isElement
$isFunction
$isNumber
$isObject
$isString
$isType
$isValidDate
$json2txt
$keys
$load
$matchall
$parseFloats
$pick
$postJSON
$prune
$save
$set
$sortBy
$stringify
$sum
$svgPoster1
$textify
$toFixed
$type
$without
Glossary
Transposition = adjacent pairs of letters are swapped
Omission = individual letters are missed out
Repetition = individual letters are entered twice consecutively
QWERTY substitution = letters are replaced by each of their QWERTY-keyboard based physical neighbours (e.g. 'h' gets replaced with y, u, j, n, b, g)
QWERTY repetition type 1 = letters are followed by each of their QWERTY-keyboard neighbours
QWERTY repetition type 2 = letters are preceded by each of their QWERTY-keyboard neighbours