C11112331312111112111133133313331311331323212331333132313223121   >>    C1111233131211111211113313331333131133132321233133313231322312   <<    C11112331312111112111133133313331311331323212331333132313223123   >>      C11112331312111112111133133313331311331323212331333132313223122   >>