C11112331333132311331333133313331333132313233311232313331312323221231   >>    C1111233133313231133133313331333133313231323331123231333131232322123   <<    C11112331333132311331333133313331333132313233311232313331312323221233   >>      C11112331333132311331333133313331333132313233311232313331312323221232   >>