D1212132333131113231323221323123231313231323223313231323331323222323221   >>    D121213233313111323132322132312323131323132322331323132333132322232322   <<    D1212132333131113231323221323123231313231323223313231323331323222323223   >>      D1212132333131113231323221323123231313231323223313231323331323222323222   >>