D121212121213132333131232313232233131323223313231322331333132313233213231231   >>    D12121212121313233313123231323223313132322331323132233133313231323321323123   <<    D121212121213132333131232313232233131323223313231322331333132313233213231233   >>      D121212121213132333131232313232233131323223313231322331333132313233213231232   >>