D121212121213132313113313231123313232233133313331312323132322111   >>    D12121212121313231311331323112331323223313331333131232313232211   <<    D121212121213132313113313231123313232233133313331312323132322113   >>      D121212121213132313113313231123313232233133313331312323132322112   >>