D1212121212131323331312323132322331313232233132313223313231232323321   >>    D121212121213132333131232313232233131323223313231322331323123232332   <<    D1212121212131323331312323132322331313232233132313223313231232323323   >>      D1212121212131323331312323132322331313232233132313223313231232323322   >>