C11112331312111112111133133313231333132313331333232213331323233311   >>    C1111233131211111211113313331323133313231333133323221333132323331   <<    C11112331312111112111133133313231333132313331333232213331323233313   >>      C11112331312111112111133133313231333132313331333232213331323233312   >>