Homonyms and others:
there/their/they're.
your/you're
I/me
then/than
it's/its
principle/principal
lose/loose
break/brake
let's/lets
done/finish
aloud/allowed
through/threw
piece/peace
whole/hole
past/passed
cause/because
plain/plane
personal/personnel
affect/effect
farther/further
allusion/illusion
real/really
good/well
bad/badly
accept/except
sew/sow
counsel/council
forth/fourth
continually/continuously
elicit/illicit
allude/elude
aisle/isle
bizarre/bazaar
stationary/stationery
idle/idol
lie/lay
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