Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'tools', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
tools
Transposition0
otols
tolos
toosl
Transposition1
ootls
tloos
toslo
Transposition2
loots
tsolo
Transposition2r
loots
tsloo
Transposition0x2
otlos
otosl
toosl
Slip3A
ootls
tolos
tolso
Slip3B
otols
tloos
tosol
Omission
ools
tols
toos
tool
Repetition
ttools
toools
toolls
toolss
QWERTY Substitution
rools
yools
tiols
tpols
toils
topls
tooks
toola
toold
QWERTY Repetition after
trools
tyools
toiols
topols
tooils
toopls
toolks
toolsa
toolsd
QWERTY Repetition before
rtools
ytools
tiools
tpools
toiols
topols
tookls
toolas
toolds
QWERTY Substitution Transposed
orols
rolos
roosl
oyols
yolos
yoosl
itols
toils
tilos
tiosl
ptols
topls
tplos
tposl
otils
tiols
tolis
toisl
otpls
tpols
tolps
topsl
otoks
tokos
toosk
otola
toloa
tooal
otold
tolod
toodl
WrongDoubles
ttols
tolls
$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