C22213331333133313112331323133313331333133313331311331323112121   >>    C2221333133313331311233132313331333133313331333131133132311212   <<    C22213331333133313112331323133313331333133313331311331323112123   >>      C22213331333133313112331323133313331333133313331311331323112122   >>