Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'ahead', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
ahead
Transposition0
haead
aehad
ahaed
aheda
Transposition1
ehaad
aaehd
ahdae
Transposition2
adeah
Transposition2r
aehad
adaeh
Transposition0x2
haaed
haeda
aehda
Slip3A
heaad
aeahd
ahade
Slip3B
eahad
aahed
ahdea
Omission
head
aead
ahad
ahed
ahea
Repetition
aahead
ahhead
aheead
aheaad
aheadd
QWERTY Substitution
shead
agead
ajead
ahwad
ahrad
ahesd
aheas
aheaf
QWERTY Repetition after
ashead
ahgead
ahjead
ahewad
aherad
aheasd
aheads
aheadf
QWERTY Repetition before
sahead
aghead
ajhead
ahwead
ahread
ahesad
aheasd
aheafd
QWERTY Substitution Transposed
hsead
sehad
shaed
sheda
gaead
aegad
agaed
ageda
jaead
aejad
ajaed
ajeda
hawad
awhad
ahawd
ahwda
harad
arhad
ahard
ahrda
haesd
aehsd
ahsed
aheds
haeas
aehas
ahaes
ahesa
haeaf
aehaf
ahaef
ahefa
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
$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