D121212121213132333132323132313231232313132313232233132313232211111   >>    D12121212121313233313232313231323123231313231323223313231323221111   <<    D121212121213132333132323132313231232313132313232233132313232211113   >>      D121212121213132333132323132313231232313132313232233132313232211112   >>