MarMadSheetGenerator

public Sheet generateSheet()
    {
        Set<String> theRegions = tourn.getRegions();
        List<String> regionsList = new ArrayList(theRegions);

        String Region1 = regionsList.get(0);
        String Region2 = regionsList.get(1);
        String Region3 = regionsList.get(2);
        String Region4 = regionsList.get(3);


        Set<Team> regionOneTeams = tourn.getTeamsFromRegion(Region1);
        Set<Team> regionTwoTeams = tourn.getTeamsFromRegion(Region2);
        Set<Team> regionThreeTeams = tourn.getTeamsFromRegion(Region3);
        Set<Team> regionFourTeams = tourn.getTeamsFromRegion(Region4);

        List<Set<Team>> south = new ArrayList<Set<Team>>();

        Set<Team> regionOneTeams = ArrayList<Set<Team>> south; //How to add teams from regionOneTeams to my arraylist at index REGION_ROUND_OF_16