Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'weller', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
weller
Transposition0
ewller
wleler
welelr
wellre
Transposition1
lewler
wlleer
weellr
welrel
Transposition2
lelwer
werlel
Transposition2r
llewer
werell
Transposition0x2
ewller
ewlelr
ewllre
wleelr
wlelre
wellre
Slip3A
elwler
wlleer
welelr
welerl
Slip3B
lweler
wleler
weellr
welrle
Omission
eller
wller
weler
wellr
welle
Repetition
wweller
weeller
welller
welleer
wellerr
QWERTY Substitution
qeller
eeller
wwller
wrller
wekler
welker
wellwr
wellrr
wellee
wellet
QWERTY Repetition after
wqeller
weeller
wewller
werller
welkler
wellker
wellewr
wellerr
wellere
wellert
QWERTY Repetition before
qweller
eweller
wweller
wreller
wekller
welkler
wellwer
wellrer
welleer
welletr
QWERTY Substitution Transposed
eqller
qleler
qelelr
qellre
eleler
eelelr
eellre
wlwler
wwlelr
wwllre
rwller
wlrler
wrlelr
wrllre
ewkler
wkeler
welker
wekelr
weklre
ewlker
wleker
wekler
welekr
welkre
ewllwr
wlelwr
welwlr
wellrw
ewllrr
wlelrr
welrlr
ewllee
wlelee
welele
ewllet
wlelet
welelt
wellte
WrongDoubles
weeler
weleer
$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