C11112331312111112111133133313331323132313232233132313311212111   >>    C1111233131211111211113313331333132313231323223313231331121211   <<    C11112331312111112111133133313331323132313232233132313311212113   >>      C11112331312111112111133133313331323132313232233132313311212112   >>