Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'lewis', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
lewis
Transposition0
elwis
lweis
leiws
lewsi
Transposition1
welis
liwes
lesiw
Transposition2
iewls
lswie
Transposition2r
iwels
lsiwe
Transposition0x2
eliws
elwsi
lwesi
Slip3A
ewlis
lwies
leisw
Slip3B
wleis
liews
leswi
Omission
ewis
lwis
leis
lews
lewi
Repetition
llewis
leewis
lewwis
lewiis
lewiss
QWERTY Substitution
kewis
lwwis
lrwis
leqis
leeis
lewus
lewos
lewia
lewid
QWERTY Repetition after
lkewis
lewwis
lerwis
lewqis
leweis
lewius
lewios
lewisa
lewisd
QWERTY Repetition before
klewis
lwewis
lrewis
leqwis
leewis
lewuis
lewois
lewias
lewids
QWERTY Substitution Transposed
ekwis
kweis
keiws
kewsi
wlwis
lwiws
lwwsi
rlwis
lwris
lriws
lrwsi
elqis
lqeis
leiqs
leqsi
eleis
leies
leesi
elwus
lweus
leuws
lewsu
elwos
lweos
leows
lewso
elwia
lweia
leiwa
lewai
elwid
lweid
leiwd
lewdi
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