D21221323131123313112211231333132322133313133313232211233132313331323323222221   >>    D2122132313112331311221123133313232213331313331323221123313231333132332322222   <<    D21221323131123313112211231333132322133313133313232211233132313331323323222223   >>      D21221323131123313112211231333132322133313133313232211233132313331323323222222   >>