Can you name every UFC champion who was stripped or vacated their title?

The 'UFC champion stripped' headlines are a regular enough occurrence in MMA.

Hardcore UFC fans, this quiz is right up your alley. 18 UFC title holders have been stripped or vacated their title up until 9 September 2018. We're asking you to name every single one of them. Second names will be accepted as full answers. You will have a full 10 minutes to complete the quiz. Best of luck and let us know how you get on. Don't be the dickhead that spoils it on everyone else or you'll be bumped down to the Fight Pass prelims. If the quiz isn't displaying properly, try refreshing the page. Still not working? Well then click here.