D121212121213132333132323132313231232313232233131133132333132212111   >>    D12121212121313233313232313231323123231323223313113313233313221211   <<    D121212121213132333132323132313231232313232233131133132333132212113   >>      D121212121213132333132323132313231232313232233131133132333132212112   >>