D1212121212131323131133132311233132313231323221333132333132333132323213111   >>    D121212121213132313113313231123313231323132322133313233313233313232321311   <<    D1212121212131323131133132311233132313231323221333132333132333132323213113   >>      D1212121212131323131133132311233132313231323221333132333132333132323213112   >>