D212213231311233131122112313331323221333131333131333132322121221   >>    D21221323131123313112211231333132322133313133313133313232212122   <<    D212213231311233131122112313331323221333131333131333132322121223   >>      D212213231311233131122112313331323221333131333131333132322121222   >>