D121213233313133313123132313232233131323223313232313232213232221   >>    D12121323331313331312313231323223313132322331323231323221323222   <<    D121213233313133313123132313232233131323223313232313232213232223   >>      D121213233313133313123132313232233131323223313232313232213232222   >>