Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'quark', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
quark
Transposition0
uqark
qaurk
qurak
quakr
Transposition1
auqrk
qrauk
qukra
Transposition2
ruaqk
qkaru
Transposition2r
rauqk
qkrau
Transposition0x2
uqrak
uqakr
qaukr
Slip3A
uaqrk
qaruk
qurka
Slip3B
aqurk
qruak
qukar
Omission
uark
qark
qurk
quak
quar
Repetition
qquark
quuark
quaark
quarrk
quarkk
QWERTY Substitution
wuark
qyark
qiark
qusrk
quaek
quatk
quarj
quarl
QWERTY Repetition after
qwuark
quyark
quiark
quasrk
quarek
quartk
quarkj
quarkl
QWERTY Repetition before
wquark
qyuark
qiuark
qusark
quaerk
quatrk
quarjk
quarlk
QWERTY Substitution Transposed
uwark
waurk
wurak
wuakr
yqark
qayrk
qyrak
qyakr
iqark
qairk
qirak
qiakr
uqsrk
qsurk
qursk
quskr
uqaek
qauek
queak
quake
uqatk
qautk
qutak
quakt
uqarj
qaurj
quraj
quajr
uqarl
qaurl
qural
qualr
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