Assuming you are developing a user based system like facebook, you will want to provide the functionality to search for other members regardless of the presence of accents in a username. Without using 3rd party collation library, you will need to remove the accents from username before comparison.
é - letter with accent; e - letter without accent; ̀ and ́ - stand alone accents;
Input: A phrase as a string (unicode)
Output: An accent free Unicode string.
checkio(u"préfèrent") == u"preferent" checkio(u"loài trăn lớn") == u"loai tran lon"
How it is used: It might be a part username verification process or system that propose username based on first and last name of user