Whether to spell any given word with ie or ei can often stump native English speakers. In school many of us were taught the mnemonic device "I before E except after C or when sounding like A as in ‘neighbor’ and ‘weigh.’ " This is a fairly good rule, but it has a lot of exceptions.
|I before E (with a long E sound)…
|except after C…
|or when sounding like "A" as in…
So much for the rule. Here are some other exceptions:
Long I sound
Re + verb beginning with I
Verbs that end in E + ing