D121212121213132333132323132313231232313132313232233132322331121   >>    D12121212121313233313232313231323123231313231323223313232233112   <<    D121212121213132333132323132313231232313132313232233132322331123   >>      D121212121213132333132323132313231232313132313232233132322331122   >>