Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase '21st', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
21st
Transposition0
12st
2s1t
21ts
Transposition1
s12t
2ts1
Transposition2
t1s2
Transposition2r
ts12
Transposition0x2
12ts
Slip3A
1s2t
2st1
Slip3B
s21t
2t1s
Omission
1st
2st
21t
21s
Repetition
221st
211st
21sst
21stt
QWERTY Substitution
21at
21dt
21sr
21sy
QWERTY Repetition after
21sat
21sdt
21str
21sty
QWERTY Repetition before
21ast
21dst
21srt
21syt
QWERTY Substitution Transposed
12at
2a1t
21ta
12dt
2d1t
21td
12sr
2s1r
21rs
12sy
2s1y
21ys
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
