D212213231311233131122112313331323221333131333132313232132323221   >>    D21221323131123313112211231333132322133313133313231323213232322   <<    D212213231311233131122112313331323221333131333132313232132323223   >>      D212213231311233131122112313331323221333131333132313232132323222   >>