D212213231311233131122112313331323221333131333132321233132313223311   >>    D21221323131123313112211231333132322133313133313232123313231322331   <<    D212213231311233131122112313331323221333131333132321233132313223313   >>      D212213231311233131122112313331323221333131333132321233132313223312   >>