D21221323131123313112211231333132322133313133313232211233132223131   >>    D2122132313112331311221123133313232213331313331323221123313222313   <<    D21221323131123313112211231333132322133313133313232211233132223133   >>      D21221323131123313112211231333132322133313133313232211233132223132   >>