D121213233313223313132322231323132313231333132233132313232312111   >>    D12121323331322331313232223132313231323133313223313231323231211   <<    D121213233313223313132322231323132313231333132233132313232312113   >>      D121213233313223313132322231323132313231333132233132313232312112   >>