Can't say for sure but I would think that a runoff would occur that would include enough categories to fill out the 12 months (with two already in before polling). I would suspect that going down the list of top vote totals the runoff would include all the ties required to fill all categories. That is filled in sequence until there is a tie among enough categories that not all in the tie can be added. I understand what you are probably asking about as in if there are two slots remaining and three categories at equal vote totals would first and second in the runoff fill the last two open slots? Or something like that?