D121213233313223313132322231323132313231333132233131133131121211   >>    D12121323331322331313232223132313231323133313223313113313112121   <<    D121213233313223313132322231323132313231333132233131133131121213   >>      D121213233313223313132322231323132313231333132233131133131121212   >>