C111123313121111121111331333133313331333131233133313332313223311311   >>    C11112331312111112111133133313331333133313123313331333231322331131   <<    C111123313121111121111331333133313331333131233133313332313223311313   >>      C111123313121111121111331333133313331333131233133313332313223311312   >>