D121212121213132333131232313232233131323223313231322331311331323221231   >>    D12121212121313233313123231323223313132322331323132233131133132322123   <<    D121212121213132333131232313232233131323223313231322331311331323221233   >>      D121212121213132333131232313232233131323223313231322331311331323221232   >>