It depends on if they fill the course. The offer would suggest that it's not the most competitive course in the country, and so they might be more lenient with it. Something like ABC may give you a decent chance of being given the place (although this will depend what the A is in, and what the C is in). BBC will be a lower chance, but they want to fill the course, and I know that Liverpool do generally go into clearing for a few subjects as it's not the most popular uni, and so a lot of 'near miss' students do get in.
It depends entirely on whether they have spaces left over for you though.