20	3
1	time	Variable1	1	8	0	99999	
2	event	Variable2	1	8	0	99999	
3	group	Variable3	1	8	0	99999	
UNITS	time	event	group	
CASE_1	4	1	1	
2	10	1	1	
3	12	2	1	
4	2	1	1	
5	8	1	1	
6	12	2	1	
7	8	2	1	
8	6	1	1	
9	9	1	1	
10	12	2	1	
11	7	2	2	
12	5	1	2	
13	11	1	2	
14	6	1	2	
15	3	1	2	
16	9	1	2	
17	4	1	2	
18	1	1	2	
19	7	1	2	
20	12	2	2	
