Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'smart', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
smart
Transposition0
msart
samrt
smrat
smatr
Transposition1
amsrt
sramt
smtra
Transposition2
rmast
starm
Transposition2r
ramst
stram
Transposition0x2
msrat
msatr
samtr
Slip3A
masrt
sarmt
smrta
Slip3B
asmrt
srmat
smtar
Omission
mart
sart
smrt
smat
smar
Repetition
ssmart
smmart
smaart
smarrt
smartt
QWERTY Substitution
amart
dmart
snart
smsrt
smaet
smatt
smarr
smary
QWERTY Repetition after
samart
sdmart
smnart
smasrt
smaret
smartt
smartr
smarty
QWERTY Repetition before
asmart
dsmart
snmart
smsart
smaert
smatrt
smarrt
smaryt
QWERTY Substitution Transposed
maart
aamrt
amrat
amatr
mdart
damrt
dmrat
dmatr
nsart
sanrt
snrat
snatr
mssrt
ssmrt
smrst
smstr
msaet
samet
smeat
smate
msatt
samtt
smtat
msarr
samrr
smrar
msary
samry
smray
smayr
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
$table
$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