C111123313121111121111331333133313331333131233133313223313232211311   >>    C11112331312111112111133133313331333133313123313331322331323221131   <<    C111123313121111121111331333133313331333131233133313223313232211313   >>      C111123313121111121111331333133313331333131233133313223313232211312   >>