D121212121213132333131232313232233131323223313231322331313231323123232211   >>    D12121212121313233313123231323223313132322331323132233131323132312323221   <<    D121212121213132333131232313232233131323223313231322331313231323123232213   >>      D121212121213132333131232313232233131323223313231322331313231323123232212   >>