D12121323331322331313232223132313231333132313223313132333132313232111221   >>    D1212132333132233131323222313231323133313231322331313233313231323211122   <<    D12121323331322331313232223132313231333132313223313132333132313232111223   >>      D12121323331322331313232223132313231333132313223313132333132313232111222   >>