D121213233313223313132322231323132313231333132233132313232213331322221   >>    D12121323331322331313232223132313231323133313223313231323221333132222   <<    D121213233313223313132322231323132313231333132233132313232213331322223   >>      D121213233313223313132322231323132313231333132233132313232213331322222   >>