Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'jacks', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
jacks
Transposition0
ajcks
jcaks
jakcs
jacsk
Transposition1
cajks
jkcas
jaskc
Transposition2
kacjs
jscka
Transposition2r
kcajs
jskca
Transposition0x2
ajkcs
ajcsk
jcask
Slip3A
acjks
jckas
jaksc
Slip3B
cjaks
jkacs
jasck
Omission
acks
jcks
jaks
jacs
jack
Repetition
jjacks
jaacks
jaccks
jackks
jackss
QWERTY Substitution
hacks
kacks
jscks
jaxks
javks
jacjs
jacls
jacka
jackd
QWERTY Repetition after
jhacks
jkacks
jascks
jacxks
jacvks
jackjs
jackls
jacksa
jacksd
QWERTY Repetition before
hjacks
kjacks
jsacks
jaxcks
javcks
jacjks
jaclks
jackas
jackds
QWERTY Substitution Transposed
ahcks
hcaks
hakcs
hacsk
akcks
kcaks
kakcs
kacsk
sjcks
jcsks
jskcs
jscsk
ajxks
jxaks
jakxs
jaxsk
ajvks
jvaks
jakvs
javsk
ajcjs
jcajs
jajcs
jacsj
ajcls
jcals
jalcs
jacsl
ajcka
jcaka
jakca
jacak
ajckd
jcakd
jakcd
jacdk
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