C11112331312111112111133133313331333113313231333132321123223311   >>    C1111233131211111211113313331333133311331323133313232112322331   <<    C11112331312111112111133133313331333113313231333132321123223313   >>      C11112331312111112111133133313331333113313231333132321123223312   >>