C11112331312111112111133133313231333132311212111133133313331123313232223131   >>    C1111233131211111211113313331323133313231121211113313331333112331323222313   <<    C11112331312111112111133133313231333132311212111133133313331123313232223133   >>      C11112331312111112111133133313231333132311212111133133313331123313232223132   >>