Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'wd 40', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
wd 40
Transposition0
dw 40
w d40
wd4 0
wd 04
Transposition1
dw40
w4 d0
wd04
Transposition2
4d w0
w0 4d
Transposition2r
4 dw0
w04 d
Transposition0x2
dw4 0
dw 04
w d04
Slip3A
d w40
w 4d0
wd40
Slip3B
wd40
w4d 0
wd0 4
Omission
d 40
w 40
wd40
wd 0
wd 4
Repetition
wwd 40
wdd 40
wd 40
wd 440
wd 400
QWERTY Substitution
qd 40
ed 40
ws 40
wf 40
QWERTY Repetition after
wqd 40
wed 40
wds 40
wdf 40
QWERTY Repetition before
qwd 40
ewd 40
wsd 40
wfd 40
QWERTY Substitution Transposed
dq 40
q d40
qd4 0
qd 04
de 40
e d40
ed4 0
ed 04
sw 40
w s40
ws4 0
ws 04
fw 40
w f40
wf4 0
wf 04
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