Add? Or ad?
Flyer - flier?
Irruption or eruption?
Every so often, or ever so often?
Except or accept?
Interpolate, extrapolate?
Could care less, or couldn't care less?
Broken, or busted?
Is it By and large, or by in large?
By the fact that, or in the fact that?
Libel, not liable.
Person that, person who?
Principal, or principle?
Regardless, or irregardless?
Recur, or reoccur?
Regretfully, or regrettably?
Suppose, or supposed?
There, or their, or they're?
Incidentally or incidently?
Peek, peak, or pique?