English is a particularly difficult language when it comes to spelling. There are so many exceptions to the rules of spelling and grammar. I before E except after C is a case in point.
We received (okay, there’s the rule in practice) but what we received was a weird and feisty heist. Also common sense dictates that, for example, if you are wearing a ruff, you might not want to get involved in rough play.
Spelling can even change depending on the context of the word. Teaching English spelling to children and adults is hard enough, but give a sympathetic thought then to the student who struggles with dyslexia.