D212213231311233131122112313331323221333131333132322112331323311211   >>    D21221323131123313112211231333132322133313133313232211233132331121   <<    D212213231311233131122112313331323221333131333132322112331323311213   >>      D212213231311233131122112313331323221333131333132322112331323311212   >>