D121212121213132333132323132313231232313232233131133132313233313232233111   >>    D12121212121313233313232313231323123231323223313113313231323331323223311   <<    D121212121213132333132323132313231232313232233131133132313233313232233113   >>      D121212121213132333132323132313231232313232233131133132313233313232233112   >>