D212213231311233131313331322331311331313232233132322112211232311321   >>    D21221323131123313131333132233131133131323223313232211221123231132   <<    D212213231311233131313331322331311331313232233132322112211232311323   >>      D212213231311233131313331322331311331313232233132322112211232311322   >>