class counter
    public integer count
end class
function MakeList(string sep=".  ")
    function MakeItem(counter c, string sep)
        c.count += 1
        return sprintf("%d%s%s",{c.count,sep,{"first","second","third"}[c.count]})
    end function
    counter c = new()
    sequence res = {}
    for i=1 to 3 do
        res = append(res,MakeItem(c,sep))
    end for
    return res
end function

?MakeList()