multilingual URL Structuire in codeigniter

Hi,

We are planning to develop multilingual website in codeigniter. But we are not sure about the URL structures.
Actually, we are developing website in 3 languages. ( English, Chinese and French )

It is possible to make URL Structure like  -

www.example.com - For English language ( Default language )
www.example.com/cn - For English Language
www.example.com/fr   - For French Language