List View

Question

My problem.
This is code.

            listView1.Columns.Add("Col1");
            listView1.Columns.Add("Col2");

            string[] strArrGroups = new string[3] { "FIRST", "SECOND", "THIRD" };
            string[] strArrItems = new string[4] { "one", "two", "tri", "cetiri" };
            for (int i = 0; i < strArrGroups.Length; i++)
            {
                int groupIndex = listView1.Groups.Add(new ListViewGroup(strArrGroups[i], HorizontalAlignment.Left));
                for (int j = 0; j < strArrItems.Length; j++)
                {
                    ListViewItem lvi = new ListViewItem(strArrItems[j]);
                    lvi.SubItems.Add("Hasta la Vista, Mon Cherri!");
                    listView1.Items.Add(lvi);
                    listView1.Groups[i].Items.Add(lvi);
                }
            }

I dont now how to include new column and write in new column
new srting[] strArrPrimer = {"1","2","3","4"}

Thanks for help