D212213231311233131122112313331323221333131333132322112331323331323233232211   >>    D21221323131123313112211231333132322133313133313232211233132333132323323221   <<    D212213231311233131122112313331323221333131333132322112331323331323233232213   >>      D212213231311233131122112313331323221333131333132322112331323331323233232212   >>