D212213231311233131313331322331311331313232233132322112211232322331   >>    D21221323131123313131333132233131133131323223313232211221123232233   <<    D212213231311233131313331322331311331313232233132322112211232322333   >>      D212213231311233131313331322331311331313232233132322112211232322332   >>