Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'duffels', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
duffels
Transposition0
udffels
dfufels
dufefls
duffles
duffesl
Transposition1
fudfels
dffuels
dueffls
duflefs
duffsle
Transposition2
fufdels
deffuls
dulfefs
dufself
Transposition2r
ffudels
deffuls
duleffs
dufslef
Transposition0x2
udffels
udfefls
udffles
udffesl
dfuefls
dfufles
dfufesl
duffles
duffesl
dufefsl
Slip3A
ufdfels
dffuels
dufefls
dufelfs
dufflse
Slip3B
fdufels
dfufels
dueffls
duflfes
duffsel
Omission
uffels
dffels
dufels
duffls
duffes
duffel
Repetition
dduffels
duuffels
dufffels
duffeels
duffells
duffelss
QWERTY Substitution
suffels
fuffels
dyffels
diffels
dudfels
dugfels
dufdels
dufgels
duffwls
duffrls
duffeks
duffela
duffeld
QWERTY Repetition after
dsuffels
dfuffels
duyffels
duiffels
dufdfels
dufgfels
duffdels
duffgels
duffewls
dufferls
duffelks
duffelsa
duffelsd
QWERTY Repetition before
sduffels
fduffels
dyuffels
diuffels
dudffels
dugffels
dufdfels
dufgfels
duffwels
duffrels
duffekls
duffelas
duffelds
QWERTY Substitution Transposed
usffels
sfufels
sufefls
suffles
suffesl
ufffels
ffufels
fufefls
fuffles
fuffesl
ydffels
dfyfels
dyfefls
dyffles
dyffesl
idffels
dfifels
difefls
diffles
diffesl
uddfels
ddufels
dufdels
dudefls
dudfles
dudfesl
udgfels
dgufels
dufgels
dugefls
dugfles
dugfesl
udfdels
dfudels
dudfels
dufedls
dufdles
dufdesl
udfgels
dfugels
dugfels
dufegls
dufgles
dufgesl
udffwls
dfufwls
dufwfls
dufflws
duffwsl
udffrls
dfufrls
dufrfls
dufflrs
duffrsl
udffeks
dfufeks
dufefks
duffkes
duffesk
udffela
dfufela
dufefla
dufflea
duffeal
udffeld
dfufeld
dufefld
duffled
duffedl
WrongDoubles
duufels
dufeels
$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