C111123313121111121111331333133313331333131233133313232211323323311   >>    C11112331312111112111133133313331333133313123313331323221132332331   <<    C111123313121111121111331333133313331333131233133313232211323323313   >>      C111123313121111121111331333133313331333131233133313232211323323312   >>