C11112331312111112111133133313231333132311212111133133313331321123232223311   >>    C1111233131211111211113313331323133313231121211113313331333132112323222331   <<    C11112331312111112111133133313231333132311212111133133313331321123232223313   >>      C11112331312111112111133133313231333132311212111133133313331321123232223312   >>