D121212121213132333132323132313231232313232233131133132313233313232223111   >>    D12121212121313233313232313231323123231323223313113313231323331323222311   <<    D121212121213132333132323132313231232313232233131133132313233313232223113   >>      D121212121213132333132323132313231232313232233131133132313233313232223112   >>