Id	Level1	Level2	Level3	Level4
1	1			
2	2			
3		1		
4	1	1		
5	2	1		
6		2		
7	1	2		
8	2	2		
9			1	
10	1		1	
11	2		1	
12		1	1	
13	1	1	1	
14	2	1	1	
15		2	1	
16	1	2	1	
17	2	2	1	
18			2	
19	1		2	
20	2		2	
21		1	2	
22	1	1	2	
23	2	1	2	
24		2	2	
25	1	2	2	
26	2	2	2	
27				1