Below is a list of potential QWERTY keyboard 'typos' (typing mistakes) for the phrase 'sierra', from the free online typo generator. Enter another phrase to see possible typing errors, or select from one of the "top typos" charts.
Original
sierra
Transposition0
iserra
seirra
sirera
sierar
Transposition1
eisrra
sreira
sirrea
siearr
Transposition2
riesra
sreria
siarre
Transposition2r
reisra
srreia
siarre
Transposition0x2
isrera
iserra
iserar
seirra
seirar
sirear
Slip3A
iesrra
serira
sirrea
sierar
Slip3B
esirra
sriera
sirera
siearr
Omission
ierra
serra
sirra
siera
sierr
Repetition
ssierra
siierra
sieerra
sierrra
sierraa
QWERTY Substitution
aierra
dierra
suerra
soerra
siwrra
sirrra
sieera
sietra
sierea
sierta
sierrs
QWERTY Repetition after
saierra
sdierra
siuerra
sioerra
siewrra
sierrra
sierera
siertra
sierrea
sierrta
sierras
QWERTY Repetition before
asierra
dsierra
suierra
soierra
siwerra
sirerra
sieerra
sietrra
sierera
siertra
sierrsa
QWERTY Substitution Transposed
iaerra
aeirra
airera
aierar
iderra
deirra
direra
dierar
userra
seurra
surera
suerar
oserra
seorra
sorera
soerar
iswrra
swirra
sirwra
siwrar
isrrra
srirra
sirrar
iseera
seiera
sierea
sieear
isetra
seitra
sitera
sierta
sietar
iserea
seirea
sireea
sieera
sierae
iserta
seirta
sireta
sietra
sierat
iserrs
seirrs
sirers
siersr
WrongDoubles
sieera
sieraa
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$json2txt
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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