i before e except after c

One of the first English spelling rules learnt in most schools is
"i before e except after c".
This only works when the pronunciation of the word is like a long ee as in shield.
For example:-
piece,
relief, niece,
priest
, thief
but after cconceive, conceit, receive, receipt
One of the easiest rules to remember is I before E, except after C - but you need to be careful, because there are plenty of exceptions.
I before E
believe - chief - friend - thief
C followed by EI
ceiling - receive - deceit - conceive

EXCEPTIONS
either - neither - foreign - height - seize - leisure