D121212121213132333131232313232233131323223313231322331333131333132223221   >>    D12121212121313233313123231323223313132322331323132233133313133313222322   <<    D121212121213132333131232313232233131323223313231322331333131333132223223   >>      D121212121213132333131232313232233131323223313231322331333131333132223222   >>