C11112331312111112111133133313331333132323133313331333133321121133132311   >>    C1111233131211111211113313331333133313232313331333133313332112113313231   <<    C11112331312111112111133133313331333132323133313331333133321121133132313   >>      C11112331312111112111133133313331333132323133313331333133321121133132312   >>