Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'hertz', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
hertz
Transposition0
ehrtz
hretz
hetrz
herzt
Transposition1
rehtz
htrez
heztr
Transposition2
terhz
hzrte
Transposition2r
trehz
hztre
Transposition0x2
ehtrz
ehrzt
hrezt
Slip3A
erhtz
hrtez
hetzr
Slip3B
rhetz
hterz
hezrt
Omission
ertz
hrtz
hetz
herz
hert
Repetition
hhertz
heertz
herrtz
herttz
hertzz
QWERTY Substitution
gertz
jertz
hwrtz
hrrtz
heetz
hettz
herrz
heryz
hertx
QWERTY Repetition after
hgertz
hjertz
hewrtz
herrtz
heretz
herttz
hertrz
hertyz
hertzx
QWERTY Repetition before
ghertz
jhertz
hwertz
hrertz
heertz
hetrtz
herrtz
herytz
hertxz
QWERTY Substitution Transposed
egrtz
gretz
getrz
gerzt
ejrtz
jretz
jetrz
jerzt
whrtz
hrwtz
hwtrz
hwrzt
rhrtz
hrtrz
hrrzt
ehetz
hetez
heezt
ehttz
htetz
hetzt
ehrrz
hrerz
herzr
ehryz
hreyz
heyrz
herzy
ehrtx
hretx
hetrx
herxt
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