C11112331312111112111133133313331311331323212331333131133132321123221331   >>    C1111233131211111211113313331333131133132321233133313113313232112322133   <<    C11112331312111112111133133313331311331323212331333131133132321123221333   >>      C11112331312111112111133133313331311331323212331333131133132321123221332   >>