Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'roku', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
roku
Transposition0
orku
rkou
rouk
Transposition1
koru
ruko
Transposition2
uokr
Transposition2r
ukor
Transposition0x2
oruk
Slip3A
okru
rkuo
Slip3B
krou
ruok
Omission
oku
rku
rou
rok
Repetition
rroku
rooku
rokku
rokuu
QWERTY Substitution
eoku
toku
riku
rpku
roju
rolu
roky
roki
QWERTY Repetition after
reoku
rtoku
roiku
ropku
rokju
roklu
rokuy
rokui
QWERTY Repetition before
eroku
troku
rioku
rpoku
rojku
rolku
rokyu
rokiu
QWERTY Substitution Transposed
oeku
ekou
eouk
otku
tkou
touk
irku
rkiu
riuk
prku
rkpu
rpuk
orju
rjou
rouj
orlu
rlou
roul
orky
rkoy
royk
orki
rkoi
roik
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