C11112331312111112111133133313331323132313232233133311213231323331   >>    C1111233131211111211113313331333132313231323223313331121323132333   <<    C11112331312111112111133133313331323132313232233133311213231323333   >>      C11112331312111112111133133313331323132313232233133311213231323332   >>