D21221323131123313112211231333132322331333132231333131323111121   >>    D2122132313112331311221123133313232233133313223133313132311112   <<    D21221323131123313112211231333132322331333132231333131323111123   >>      D21221323131123313112211231333132322331333132231333131323111122   >>