Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'summer', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
summer
Transposition0
usmmer
smumer
sumemr
summre
Transposition1
musmer
smmuer
suemmr
sumrem
Transposition2
mumser
semmur
surmem
Transposition2r
mmuser
semmur
suremm
Transposition0x2
usmmer
usmemr
usmmre
smuemr
smumre
summre
Slip3A
umsmer
smmuer
sumemr
sumerm
Slip3B
msumer
smumer
suemmr
sumrme
Omission
ummer
smmer
sumer
summr
summe
Repetition
ssummer
suummer
summmer
summeer
summerr
QWERTY Substitution
aummer
dummer
symmer
simmer
sunmer
sumner
summwr
summrr
summee
summet
QWERTY Repetition after
saummer
sdummer
suymmer
suimmer
sumnmer
summner
summewr
summerr
summere
summert
QWERTY Repetition before
asummer
dsummer
syummer
siummer
sunmmer
sumnmer
summwer
summrer
summeer
summetr
QWERTY Substitution Transposed
uammer
amumer
aumemr
aummre
udmmer
dmumer
dumemr
dummre
ysmmer
smymer
symemr
symmre
ismmer
smimer
simemr
simmre
usnmer
snumer
sumner
sunemr
sunmre
usmner
smuner
sunmer
sumenr
sumnre
usmmwr
smumwr
sumwmr
summrw
usmmrr
smumrr
sumrmr
usmmee
smumee
sumeme
usmmet
smumet
sumemt
summte
WrongDoubles
suumer
sumeer
$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