D212213231311233131122112313331323221333131333132322112331323131323221   >>    D21221323131123313112211231333132322133313133313232211233132313132322   <<    D212213231311233131122112313331323221333131333132322112331323131323223   >>      D212213231311233131122112313331323221333131333132322112331323131323222   >>