Coverage: Watch Middlesbrough v Aston Villa (6 January, 17:30 GMT kick-off) and Arsenal v Liverpool (7 January, 16:30 GMT) on BBC One, BBC iPlayer and the BBC Sport website and app. Chelsea v Preston (6 January, 17:30 GMT) and Man City v Huddersfield (7 January, 14:00 GMT) also available on iPlayer and BBC Sport website and app. Selected BBC Radio 5 Live commentaries, plus live text updates and highlights of every match on the website and app.
We've put together a quiz to test your knowledge of the competition - can you answer eight questions correctly to secure FA glory? To make it even more challenging you will go back to the first round every time you get a question wrong.
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