C11112331312111112111133133313331323132313232233133311213112111   >>    C1111233131211111211113313331333132313231323223313331121311211   <<    C11112331312111112111133133313331323132313232233133311213112113   >>      C11112331312111112111133133313331323132313232233133311213112112   >>