C11112331333132311331333133112111133132313232233132112323112111   >>    C1111233133313231133133313311211113313231323223313211232311211   <<    C11112331333132311331333133112111133132313232233132112323112113   >>      C11112331333132311331333133112111133132313232233132112323112112   >>