D1212121221323132313232332313232233132313232213331323231323132311   >>    D121212122132313231323233231323223313231323221333132323132313231   <<    D1212121221323132313232332313232233132313232213331323231323132313   >>      D1212121221323132313232332313232233132313232213331323231323132312   >>