D1212132333131322331323331313132313331323331313233313231232323221   >>    D121213233313132233132333131313231333132333131323331323123232322   <<    D1212132333131322331323331313132313331323331313233313231232323223   >>      D1212132333131322331323331313132313331323331313233313231232323222   >>