C11112331312111112111133133313331323132313232233133313223323331   >>    C1111233131211111211113313331333132313231323223313331322332333   <<    C11112331312111112111133133313331323132313232233133313223323333   >>      C11112331312111112111133133313331323132313232233133313223323332   >>