Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'lens', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
lens
Transposition0
elns
lnes
lesn
Transposition1
nels
lsne
Transposition2
senl
Transposition2r
snel
Transposition0x2
elsn
Slip3A
enls
lnse
Slip3B
nles
lsen
Omission
ens
lns
les
len
Repetition
llens
leens
lenns
lenss
QWERTY Substitution
kens
lwns
lrns
lebs
lems
lena
lend
QWERTY Repetition after
lkens
lewns
lerns
lenbs
lenms
lensa
lensd
QWERTY Repetition before
klens
lwens
lrens
lebns
lemns
lenas
lends
QWERTY Substitution Transposed
ekns
knes
kesn
wlns
lnws
lwsn
rlns
lnrs
lrsn
elbs
lbes
lesb
elms
lmes
lesm
elna
lnea
lean
elnd
lned
ledn
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
$sortKeys
$stringify
$stringifySafe
$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