C11112331312111112111133133313331333132112312113313231333133313332213233311   >>    C1111233131211111211113313331333133313211231211331323133313331333221323331   <<    C11112331312111112111133133313331333132112312113313231333133313332213233313   >>      C11112331312111112111133133313331333132112312113313231333133313332213233312   >>