D121212121213132333131232313232233131323223313231322331323331323133313123211111   >>    D12121212121313233313123231323223313132322331323132233132333132313331312321111   <<    D121212121213132333131232313232233131323223313231322331323331323133313123211113   >>      D121212121213132333131232313232233131323223313231322331323331323133313123211112   >>