Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'null', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
null
Transposition0
unll
nlul
Transposition1
lunl
nllu
Transposition2
luln
Transposition2r
llun
Transposition0x2
unll
Slip3A
ulnl
nllu
Slip3B
lnul
nlul
Omission
ull
nll
nul
Repetition
nnull
nuull
nulll
QWERTY Substitution
bull
mull
nyll
nill
nukl
nulk
QWERTY Repetition after
nbull
nmull
nuyll
nuill
nulkl
nullk
QWERTY Repetition before
bnull
mnull
nyull
niull
nukll
nulkl
QWERTY Substitution Transposed
ubll
blul
umll
mlul
ynll
nlyl
inll
nlil
unkl
nkul
nulk
unlk
nluk
nukl
WrongDoubles
nuul
$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