D1212121221323132313232332313232233132313232213331323331313123231111   >>    D121212122132313231323233231323223313231323221333132333131312323111   <<    D1212121221323132313232332313232233132313232213331323331313123231113   >>      D1212121221323132313232332313232233132313232213331323331313123231112   >>