I see this mistake happen so many times, and I do not know why. At only four characters it is such a simple word, and even if you do make the mistake, why is the rule so hard to learn?
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.