Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'firebox', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
firebox
Transposition0
ifrebox
friebox
fierbox
firbeox
fireobx
firebxo
Transposition1
rifebox
feribox
fiberox
firobex
firexob
Transposition2
eirfbox
fbreiox
fioebrx
firxboe
Transposition2r
erifbox
fberiox
fioberx
firxobe
Transposition0x2
iferbox
ifrbeox
ifreobx
ifrebxo
fribeox
frieobx
friebxo
fierobx
fierbxo
firbexo
Slip3A
irfebox
freibox
fiebrox
firboex
fireoxb
Slip3B
rfiebox
feirbox
fibreox
firoebx
firexbo
Omission
irebox
frebox
fiebox
firbox
fireox
firebx
firebo
Repetition
ffirebox
fiirebox
firrebox
fireebox
firebbox
fireboox
fireboxx
QWERTY Substitution
direbox
girebox
furebox
forebox
fieebox
fitebox
firwbox
firrbox
firevox
firenox
firebix
firebpx
fireboz
fireboc
QWERTY Repetition after
fdirebox
fgirebox
fiurebox
fiorebox
fireebox
firtebox
firewbox
firerbox
firebvox
firebnox
fireboix
firebopx
fireboxz
fireboxc
QWERTY Repetition before
dfirebox
gfirebox
fuirebox
foirebox
fierebox
fitrebox
firwebox
firrebox
firevbox
firenbox
firebiox
firebpox
firebozx
firebocx
QWERTY Substitution Transposed
idrebox
driebox
dierbox
dirbeox
direobx
direbxo
igrebox
griebox
gierbox
girbeox
gireobx
girebxo
ufrebox
fruebox
fuerbox
furbeox
fureobx
furebxo
ofrebox
froebox
foerbox
forbeox
foreobx
forebxo
ifeebox
feiebox
fiebeox
fieeobx
fieebxo
iftebox
ftiebox
fietbox
fitbeox
fiteobx
fitebxo
ifrwbox
friwbox
fiwrbox
firbwox
firwobx
firwbxo
ifrrbox
frirbox
firbrox
firrobx
firrbxo
ifrevox
frievox
fiervox
firveox
fireovx
firevxo
ifrenox
frienox
fiernox
firneox
fireonx
firenxo
ifrebix
friebix
fierbix
firbeix
fireibx
firebxi
ifrebpx
friebpx
fierbpx
firbepx
firepbx
firebxp
ifreboz
frieboz
fierboz
firbeoz
fireobz
firebzo
ifreboc
frieboc
fierboc
firbeoc
fireobc
firebco
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