Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'zaful', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
zaful
Transposition0
azful
zfaul
zaufl
zaflu
Transposition1
fazul
zufal
zaluf
Transposition2
uafzl
zlfua
Transposition2r
ufazl
zlufa
Transposition0x2
azufl
azflu
zfalu
Slip3A
afzul
zfual
zaulf
Slip3B
fzaul
zuafl
zalfu
Omission
aful
zful
zaul
zafl
zafu
Repetition
zzaful
zaaful
zafful
zafuul
zafull
QWERTY Substitution
xaful
zsful
zadul
zagul
zafyl
zafil
zafuk
QWERTY Repetition after
zxaful
zasful
zafdul
zafgul
zafuyl
zafuil
zafulk
QWERTY Repetition before
xzaful
zsaful
zadful
zagful
zafyul
zafiul
zafukl
QWERTY Substitution Transposed
axful
xfaul
xaufl
xaflu
szful
zfsul
zsufl
zsflu
azdul
zdaul
zaudl
zadlu
azgul
zgaul
zaugl
zaglu
azfyl
zfayl
zayfl
zafly
azfil
zfail
zaifl
zafli
azfuk
zfauk
zaufk
zafku
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
$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