D212213231311233131122112313331323221333131333132322112331323133313232232221   >>    D21221323131123313112211231333132322133313133313232211233132313331323223222   <<    D212213231311233131122112313331323221333131333132322112331323133313232232223   >>      D212213231311233131122112313331323221333131333132322112331323133313232232222   >>