For example:
* tie (from the word "tie")
* lie (from the word "lie")
* die (from the word "die")
* vie (from the word "vie")
This is a common spelling rule in English, and it helps to distinguish words that might otherwise be confused. For example, "tie" and "tie" are both pronounceable, but the spelling "tie" is correct because it follows the rule.
There are some exceptions to this rule, but it is a good guideline to follow.