Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'john', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
john
Transposition0
ojhn
jhon
jonh
Transposition1
hojn
jnho
Transposition2
nohj
Transposition2r
nhoj
Transposition0x2
ojnh
Slip3A
ohjn
jhno
Slip3B
hjon
jnoh
Omission
ohn
jhn
jon
joh
Repetition
jjohn
joohn
johhn
johnn
QWERTY Substitution
hohn
kohn
jihn
jphn
jogn
jojn
johb
johm
QWERTY Repetition after
jhohn
jkohn
joihn
jophn
johgn
johjn
johnb
johnm
QWERTY Repetition before
hjohn
kjohn
jiohn
jpohn
joghn
jojhn
johbn
johmn
QWERTY Substitution Transposed
ohhn
hhon
honh
okhn
khon
konh
ijhn
jhin
jinh
pjhn
jhpn
jpnh
ojgn
jgon
jong
ojjn
jjon
jonj
ojhb
jhob
jobh
ojhm
jhom
jomh
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
$sortKeys
$stringify
$stringifySafe
$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