SQLite 3 Tree List Without CTE

I adapted a SQL statement to work with SQLite 3. But unfortunately Common Table Expressions and WITH clause works only in SQLite 3.6 ahead, but the users of my Open Source application are using SQLite 3.2 and I cannot force them to update the whole Linux system to get the new packages. Is it possible to adapt the code to work without using a CTE and "With" Clause using only SQL Language?

Here's the code:

WITH 
cte AS 
   (SELECT 0 AS level, collectionID, collectionName, parentCollectionID, CAST(collectionID AS VARCHAR(128)) AS Sort
           FROM collections WHERE parentCollectionID IS NULL
    UNION ALL
    SELECT p.level + 1, c.collectionID, c.collectionName, c.parentCollectionID, CAST(p.Sort || '/' || CAST(c.collectionID AS VARCHAR) AS VARCHAR(128))
          FROM collections c
          INNER JOIN cte p ON p.collectionID = c.parentCollectionID)
SELECT 
collectionID, 
printf('%*s', level * 4, '') || collectionName AS collectionName, 
Sort,
parentCollectionID 
FROM cte
ORDER BY Sort;

Here's the result:

collectionID    collectionName            Sort     parentCollectionID
1               Dissertação               1        0
10              Filosofia Reformacional   10       0
11              Dooyeweerd                11       0
14              ZotPad favorites          14       0
15              Diversos                  15       0 
2               Bíblia                    2        0
3               Políticas Públicas        3        0
4               Zotero                    4        0
5               Linux                     5        0   
6               Tese Doutorado            6        0
12                  Pontal Do Paraná      6/12     6
7                   Multimodal            6/7      6
13                     Modalidades        6/7/13   7
8                      Base Histórica     6/7/8    7
9              Artigo Weber               9        0

Thank you so much, Best regards, Christian