You've just discovered Odoo, an awesome suite of web-based open-source business apps. Not only impressed by the idea and quality of the apps, you, as a member of the open-source community, loved the fact that Odoo is open source.

After hours reading the codebase and learning how Odoo works, you decide to check the commit history of the most fun app: Real State! But wait... you just realized... there is a pattern in some of the author emails! Of course! Odoo employees! There is also a whole team of developers making sure the codebase is clean and developing new features!

You realized that Odoo emails have the format S@odoo.com, where S is a string of lowercase letters with size 2, 3 or 4. Really excited by your own discovery, you decide to write a script to check if an email is a potential Odoo email. That is, if it follows the described format.